1 /*
2 * Copyright (c) 2000, 2011, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #include "precompiled.hpp"
26 #include "asm/assembler.hpp"
27 #include "c1/c1_Compilation.hpp"
28 #include "c1/c1_LIRAssembler.hpp"
29 #include "c1/c1_MacroAssembler.hpp"
30 #include "c1/c1_Runtime1.hpp"
31 #include "c1/c1_ValueStack.hpp"
32 #include "ci/ciArrayKlass.hpp"
33 #include "ci/ciInstance.hpp"
34 #include "gc_interface/collectedHeap.hpp"
35 #include "memory/barrierSet.hpp"
36 #include "memory/cardTableModRefBS.hpp"
37 #include "nativeInst_x86.hpp"
38 #include "oops/objArrayKlass.hpp"
39 #include "runtime/sharedRuntime.hpp"
40
41
42 // These masks are used to provide 128-bit aligned bitmasks to the XMM
43 // instructions, to allow sign-masking or sign-bit flipping. They allow
44 // fast versions of NegF/NegD and AbsF/AbsD.
45
46 // Note: 'double' and 'long long' have 32-bits alignment on x86.
47 static jlong* double_quadword(jlong *adr, jlong lo, jlong hi) {
48 // Use the expression (adr)&(~0xF) to provide 128-bits aligned address
49 // of 128-bits operands for SSE instructions.
50 jlong *operand = (jlong*)(((intptr_t)adr) & ((intptr_t)(~0xF)));
51 // Store the value to a 128-bits operand.
52 operand[0] = lo;
53 operand[1] = hi;
54 return operand;
55 }
56
57 // Buffer for 128-bits masks used by SSE instructions.
58 static jlong fp_signmask_pool[(4+1)*2]; // 4*128bits(data) + 128bits(alignment)
59
60 // Static initialization during VM startup.
61 static jlong *float_signmask_pool = double_quadword(&fp_signmask_pool[1*2], CONST64(0x7FFFFFFF7FFFFFFF), CONST64(0x7FFFFFFF7FFFFFFF));
62 static jlong *double_signmask_pool = double_quadword(&fp_signmask_pool[2*2], CONST64(0x7FFFFFFFFFFFFFFF), CONST64(0x7FFFFFFFFFFFFFFF));
63 static jlong *float_signflip_pool = double_quadword(&fp_signmask_pool[3*2], CONST64(0x8000000080000000), CONST64(0x8000000080000000));
64 static jlong *double_signflip_pool = double_quadword(&fp_signmask_pool[4*2], CONST64(0x8000000000000000), CONST64(0x8000000000000000));
65
66
67
68 NEEDS_CLEANUP // remove this definitions ?
69 const Register IC_Klass = rax; // where the IC klass is cached
70 const Register SYNC_header = rax; // synchronization header
71 const Register SHIFT_count = rcx; // where count for shift operations must be
72
73 #define __ _masm->
74
75
76 static void select_different_registers(Register preserve,
77 Register extra,
78 Register &tmp1,
79 Register &tmp2) {
80 if (tmp1 == preserve) {
81 assert_different_registers(tmp1, tmp2, extra);
82 tmp1 = extra;
83 } else if (tmp2 == preserve) {
84 assert_different_registers(tmp1, tmp2, extra);
85 tmp2 = extra;
86 }
87 assert_different_registers(preserve, tmp1, tmp2);
88 }
89
90
91
92 static void select_different_registers(Register preserve,
93 Register extra,
94 Register &tmp1,
95 Register &tmp2,
96 Register &tmp3) {
97 if (tmp1 == preserve) {
98 assert_different_registers(tmp1, tmp2, tmp3, extra);
99 tmp1 = extra;
100 } else if (tmp2 == preserve) {
101 assert_different_registers(tmp1, tmp2, tmp3, extra);
102 tmp2 = extra;
103 } else if (tmp3 == preserve) {
104 assert_different_registers(tmp1, tmp2, tmp3, extra);
105 tmp3 = extra;
106 }
107 assert_different_registers(preserve, tmp1, tmp2, tmp3);
108 }
109
110
111
112 bool LIR_Assembler::is_small_constant(LIR_Opr opr) {
113 if (opr->is_constant()) {
114 LIR_Const* constant = opr->as_constant_ptr();
115 switch (constant->type()) {
116 case T_INT: {
117 return true;
118 }
119
120 default:
121 return false;
122 }
123 }
124 return false;
125 }
126
127
128 LIR_Opr LIR_Assembler::receiverOpr() {
129 return FrameMap::receiver_opr;
130 }
131
132 LIR_Opr LIR_Assembler::osrBufferPointer() {
133 return FrameMap::as_pointer_opr(receiverOpr()->as_register());
134 }
135
136 //--------------fpu register translations-----------------------
137
138
139 address LIR_Assembler::float_constant(float f) {
140 address const_addr = __ float_constant(f);
141 if (const_addr == NULL) {
142 bailout("const section overflow");
143 return __ code()->consts()->start();
144 } else {
145 return const_addr;
146 }
147 }
148
149
150 address LIR_Assembler::double_constant(double d) {
151 address const_addr = __ double_constant(d);
152 if (const_addr == NULL) {
153 bailout("const section overflow");
154 return __ code()->consts()->start();
155 } else {
156 return const_addr;
157 }
158 }
159
160
161 void LIR_Assembler::set_24bit_FPU() {
162 __ fldcw(ExternalAddress(StubRoutines::addr_fpu_cntrl_wrd_24()));
163 }
164
165 void LIR_Assembler::reset_FPU() {
166 __ fldcw(ExternalAddress(StubRoutines::addr_fpu_cntrl_wrd_std()));
167 }
168
169 void LIR_Assembler::fpop() {
170 __ fpop();
171 }
172
173 void LIR_Assembler::fxch(int i) {
174 __ fxch(i);
175 }
176
177 void LIR_Assembler::fld(int i) {
178 __ fld_s(i);
179 }
180
181 void LIR_Assembler::ffree(int i) {
182 __ ffree(i);
183 }
184
185 void LIR_Assembler::breakpoint() {
186 __ int3();
187 }
188
189 void LIR_Assembler::push(LIR_Opr opr) {
190 if (opr->is_single_cpu()) {
191 __ push_reg(opr->as_register());
192 } else if (opr->is_double_cpu()) {
193 NOT_LP64(__ push_reg(opr->as_register_hi()));
194 __ push_reg(opr->as_register_lo());
195 } else if (opr->is_stack()) {
196 __ push_addr(frame_map()->address_for_slot(opr->single_stack_ix()));
197 } else if (opr->is_constant()) {
198 LIR_Const* const_opr = opr->as_constant_ptr();
199 if (const_opr->type() == T_OBJECT) {
200 __ push_oop(const_opr->as_jobject());
201 } else if (const_opr->type() == T_INT) {
202 __ push_jint(const_opr->as_jint());
203 } else {
204 ShouldNotReachHere();
205 }
206
207 } else {
208 ShouldNotReachHere();
209 }
210 }
211
212 void LIR_Assembler::pop(LIR_Opr opr) {
213 if (opr->is_single_cpu()) {
214 __ pop_reg(opr->as_register());
215 } else {
216 ShouldNotReachHere();
217 }
218 }
219
220 bool LIR_Assembler::is_literal_address(LIR_Address* addr) {
221 return addr->base()->is_illegal() && addr->index()->is_illegal();
222 }
223
224 //-------------------------------------------
225
226 Address LIR_Assembler::as_Address(LIR_Address* addr) {
227 return as_Address(addr, rscratch1);
228 }
229
230 Address LIR_Assembler::as_Address(LIR_Address* addr, Register tmp) {
231 if (addr->base()->is_illegal()) {
232 assert(addr->index()->is_illegal(), "must be illegal too");
233 AddressLiteral laddr((address)addr->disp(), relocInfo::none);
234 if (! __ reachable(laddr)) {
235 __ movptr(tmp, laddr.addr());
236 Address res(tmp, 0);
237 return res;
238 } else {
239 return __ as_Address(laddr);
240 }
241 }
242
243 Register base = addr->base()->as_pointer_register();
244
245 if (addr->index()->is_illegal()) {
246 return Address( base, addr->disp());
247 } else if (addr->index()->is_cpu_register()) {
248 Register index = addr->index()->as_pointer_register();
249 return Address(base, index, (Address::ScaleFactor) addr->scale(), addr->disp());
250 } else if (addr->index()->is_constant()) {
251 intptr_t addr_offset = (addr->index()->as_constant_ptr()->as_jint() << addr->scale()) + addr->disp();
252 assert(Assembler::is_simm32(addr_offset), "must be");
253
254 return Address(base, addr_offset);
255 } else {
256 Unimplemented();
257 return Address();
258 }
259 }
260
261
262 Address LIR_Assembler::as_Address_hi(LIR_Address* addr) {
263 Address base = as_Address(addr);
264 return Address(base._base, base._index, base._scale, base._disp + BytesPerWord);
265 }
266
267
268 Address LIR_Assembler::as_Address_lo(LIR_Address* addr) {
269 return as_Address(addr);
270 }
271
272
273 void LIR_Assembler::osr_entry() {
274 offsets()->set_value(CodeOffsets::OSR_Entry, code_offset());
275 BlockBegin* osr_entry = compilation()->hir()->osr_entry();
276 ValueStack* entry_state = osr_entry->state();
277 int number_of_locks = entry_state->locks_size();
278
279 // we jump here if osr happens with the interpreter
280 // state set up to continue at the beginning of the
281 // loop that triggered osr - in particular, we have
282 // the following registers setup:
283 //
284 // rcx: osr buffer
285 //
286
287 // build frame
288 ciMethod* m = compilation()->method();
289 __ build_frame(initial_frame_size_in_bytes());
290
291 // OSR buffer is
292 //
293 // locals[nlocals-1..0]
294 // monitors[0..number_of_locks]
295 //
296 // locals is a direct copy of the interpreter frame so in the osr buffer
297 // so first slot in the local array is the last local from the interpreter
298 // and last slot is local[0] (receiver) from the interpreter
299 //
300 // Similarly with locks. The first lock slot in the osr buffer is the nth lock
301 // from the interpreter frame, the nth lock slot in the osr buffer is 0th lock
302 // in the interpreter frame (the method lock if a sync method)
303
304 // Initialize monitors in the compiled activation.
305 // rcx: pointer to osr buffer
306 //
307 // All other registers are dead at this point and the locals will be
308 // copied into place by code emitted in the IR.
309
310 Register OSR_buf = osrBufferPointer()->as_pointer_register();
311 { assert(frame::interpreter_frame_monitor_size() == BasicObjectLock::size(), "adjust code below");
312 int monitor_offset = BytesPerWord * method()->max_locals() +
313 (2 * BytesPerWord) * (number_of_locks - 1);
314 // SharedRuntime::OSR_migration_begin() packs BasicObjectLocks in
315 // the OSR buffer using 2 word entries: first the lock and then
316 // the oop.
317 for (int i = 0; i < number_of_locks; i++) {
318 int slot_offset = monitor_offset - ((i * 2) * BytesPerWord);
319 #ifdef ASSERT
320 // verify the interpreter's monitor has a non-null object
321 {
322 Label L;
323 __ cmpptr(Address(OSR_buf, slot_offset + 1*BytesPerWord), (int32_t)NULL_WORD);
324 __ jcc(Assembler::notZero, L);
325 __ stop("locked object is NULL");
326 __ bind(L);
327 }
328 #endif
329 __ movptr(rbx, Address(OSR_buf, slot_offset + 0));
330 __ movptr(frame_map()->address_for_monitor_lock(i), rbx);
331 __ movptr(rbx, Address(OSR_buf, slot_offset + 1*BytesPerWord));
332 __ movptr(frame_map()->address_for_monitor_object(i), rbx);
333 }
334 }
335 }
336
337
338 // inline cache check; done before the frame is built.
339 int LIR_Assembler::check_icache() {
340 Register receiver = FrameMap::receiver_opr->as_register();
341 Register ic_klass = IC_Klass;
342 const int ic_cmp_size = LP64_ONLY(10) NOT_LP64(9);
343 const bool do_post_padding = VerifyOops || UseCompressedOops;
344 if (!do_post_padding) {
345 // insert some nops so that the verified entry point is aligned on CodeEntryAlignment
346 while ((__ offset() + ic_cmp_size) % CodeEntryAlignment != 0) {
347 __ nop();
348 }
349 }
350 int offset = __ offset();
351 __ inline_cache_check(receiver, IC_Klass);
352 assert(__ offset() % CodeEntryAlignment == 0 || do_post_padding, "alignment must be correct");
353 if (do_post_padding) {
354 // force alignment after the cache check.
355 // It's been verified to be aligned if !VerifyOops
356 __ align(CodeEntryAlignment);
357 }
358 return offset;
359 }
360
361
362 void LIR_Assembler::jobject2reg_with_patching(Register reg, CodeEmitInfo* info) {
363 jobject o = NULL;
364 PatchingStub* patch = new PatchingStub(_masm, PatchingStub::load_klass_id);
365 __ movoop(reg, o);
366 patching_epilog(patch, lir_patch_normal, reg, info);
367 }
368
369
370 // This specifies the rsp decrement needed to build the frame
371 int LIR_Assembler::initial_frame_size_in_bytes() {
372 // if rounding, must let FrameMap know!
373
374 // The frame_map records size in slots (32bit word)
375
376 // subtract two words to account for return address and link
377 return (frame_map()->framesize() - (2*VMRegImpl::slots_per_word)) * VMRegImpl::stack_slot_size;
378 }
379
380
381 int LIR_Assembler::emit_exception_handler() {
382 // if the last instruction is a call (typically to do a throw which
383 // is coming at the end after block reordering) the return address
384 // must still point into the code area in order to avoid assertion
385 // failures when searching for the corresponding bci => add a nop
386 // (was bug 5/14/1999 - gri)
387 __ nop();
388
389 // generate code for exception handler
390 address handler_base = __ start_a_stub(exception_handler_size);
391 if (handler_base == NULL) {
392 // not enough space left for the handler
393 bailout("exception handler overflow");
394 return -1;
395 }
396
397 int offset = code_offset();
398
399 // the exception oop and pc are in rax, and rdx
400 // no other registers need to be preserved, so invalidate them
401 __ invalidate_registers(false, true, true, false, true, true);
402
403 // check that there is really an exception
404 __ verify_not_null_oop(rax);
405
406 // search an exception handler (rax: exception oop, rdx: throwing pc)
407 __ call(RuntimeAddress(Runtime1::entry_for(Runtime1::handle_exception_from_callee_id)));
408 __ should_not_reach_here();
409 assert(code_offset() - offset <= exception_handler_size, "overflow");
410 __ end_a_stub();
411
412 return offset;
413 }
414
415
416 // Emit the code to remove the frame from the stack in the exception
417 // unwind path.
418 int LIR_Assembler::emit_unwind_handler() {
419 #ifndef PRODUCT
420 if (CommentedAssembly) {
421 _masm->block_comment("Unwind handler");
422 }
423 #endif
424
425 int offset = code_offset();
426
427 // Fetch the exception from TLS and clear out exception related thread state
428 __ get_thread(rsi);
429 __ movptr(rax, Address(rsi, JavaThread::exception_oop_offset()));
430 __ movptr(Address(rsi, JavaThread::exception_oop_offset()), (intptr_t)NULL_WORD);
431 __ movptr(Address(rsi, JavaThread::exception_pc_offset()), (intptr_t)NULL_WORD);
432
433 __ bind(_unwind_handler_entry);
434 __ verify_not_null_oop(rax);
435 if (method()->is_synchronized() || compilation()->env()->dtrace_method_probes()) {
436 __ mov(rsi, rax); // Preserve the exception
437 }
438
439 // Preform needed unlocking
440 MonitorExitStub* stub = NULL;
441 if (method()->is_synchronized()) {
442 monitor_address(0, FrameMap::rax_opr);
443 stub = new MonitorExitStub(FrameMap::rax_opr, true, 0);
444 __ unlock_object(rdi, rbx, rax, *stub->entry());
445 __ bind(*stub->continuation());
446 }
447
448 if (compilation()->env()->dtrace_method_probes()) {
449 __ get_thread(rax);
450 __ movptr(Address(rsp, 0), rax);
451 __ movoop(Address(rsp, sizeof(void*)), method()->constant_encoding());
452 __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_method_exit)));
453 }
454
455 if (method()->is_synchronized() || compilation()->env()->dtrace_method_probes()) {
456 __ mov(rax, rsi); // Restore the exception
457 }
458
459 // remove the activation and dispatch to the unwind handler
460 __ remove_frame(initial_frame_size_in_bytes());
461 __ jump(RuntimeAddress(Runtime1::entry_for(Runtime1::unwind_exception_id)));
462
463 // Emit the slow path assembly
464 if (stub != NULL) {
465 stub->emit_code(this);
466 }
467
468 return offset;
469 }
470
471
472 int LIR_Assembler::emit_deopt_handler() {
473 // if the last instruction is a call (typically to do a throw which
474 // is coming at the end after block reordering) the return address
475 // must still point into the code area in order to avoid assertion
476 // failures when searching for the corresponding bci => add a nop
477 // (was bug 5/14/1999 - gri)
478 __ nop();
479
480 // generate code for exception handler
481 address handler_base = __ start_a_stub(deopt_handler_size);
482 if (handler_base == NULL) {
483 // not enough space left for the handler
484 bailout("deopt handler overflow");
485 return -1;
486 }
487
488 int offset = code_offset();
489 InternalAddress here(__ pc());
490
491 __ pushptr(here.addr());
492 __ jump(RuntimeAddress(SharedRuntime::deopt_blob()->unpack()));
493
494 assert(code_offset() - offset <= deopt_handler_size, "overflow");
495 __ end_a_stub();
496
497 return offset;
498 }
499
500
501 // This is the fast version of java.lang.String.compare; it has not
502 // OSR-entry and therefore, we generate a slow version for OSR's
503 void LIR_Assembler::emit_string_compare(LIR_Opr arg0, LIR_Opr arg1, LIR_Opr dst, CodeEmitInfo* info) {
504 __ movptr (rbx, rcx); // receiver is in rcx
505 __ movptr (rax, arg1->as_register());
506
507 // Get addresses of first characters from both Strings
508 __ load_heap_oop(rsi, Address(rax, java_lang_String::value_offset_in_bytes()));
509 __ movptr (rcx, Address(rax, java_lang_String::offset_offset_in_bytes()));
510 __ lea (rsi, Address(rsi, rcx, Address::times_2, arrayOopDesc::base_offset_in_bytes(T_CHAR)));
511
512
513 // rbx, may be NULL
514 add_debug_info_for_null_check_here(info);
515 __ load_heap_oop(rdi, Address(rbx, java_lang_String::value_offset_in_bytes()));
516 __ movptr (rcx, Address(rbx, java_lang_String::offset_offset_in_bytes()));
517 __ lea (rdi, Address(rdi, rcx, Address::times_2, arrayOopDesc::base_offset_in_bytes(T_CHAR)));
518
519 // compute minimum length (in rax) and difference of lengths (on top of stack)
520 __ movl (rbx, Address(rbx, java_lang_String::count_offset_in_bytes()));
521 __ movl (rax, Address(rax, java_lang_String::count_offset_in_bytes()));
522 __ mov (rcx, rbx);
523 __ subptr(rbx, rax); // subtract lengths
524 __ push (rbx); // result
525 __ cmov (Assembler::lessEqual, rax, rcx);
526
527 // is minimum length 0?
528 Label noLoop, haveResult;
529 __ testptr (rax, rax);
530 __ jcc (Assembler::zero, noLoop);
531
532 // compare first characters
533 __ load_unsigned_short(rcx, Address(rdi, 0));
534 __ load_unsigned_short(rbx, Address(rsi, 0));
535 __ subl(rcx, rbx);
536 __ jcc(Assembler::notZero, haveResult);
537 // starting loop
538 __ decrement(rax); // we already tested index: skip one
539 __ jcc(Assembler::zero, noLoop);
540
541 // set rsi.edi to the end of the arrays (arrays have same length)
542 // negate the index
543
544 __ lea(rsi, Address(rsi, rax, Address::times_2, type2aelembytes(T_CHAR)));
545 __ lea(rdi, Address(rdi, rax, Address::times_2, type2aelembytes(T_CHAR)));
546 __ negptr(rax);
547
548 // compare the strings in a loop
549
550 Label loop;
551 __ align(wordSize);
552 __ bind(loop);
553 __ load_unsigned_short(rcx, Address(rdi, rax, Address::times_2, 0));
554 __ load_unsigned_short(rbx, Address(rsi, rax, Address::times_2, 0));
555 __ subl(rcx, rbx);
556 __ jcc(Assembler::notZero, haveResult);
557 __ increment(rax);
558 __ jcc(Assembler::notZero, loop);
559
560 // strings are equal up to min length
561
562 __ bind(noLoop);
563 __ pop(rax);
564 return_op(LIR_OprFact::illegalOpr);
565
566 __ bind(haveResult);
567 // leave instruction is going to discard the TOS value
568 __ mov (rax, rcx); // result of call is in rax,
569 }
570
571
572 void LIR_Assembler::return_op(LIR_Opr result) {
573 assert(result->is_illegal() || !result->is_single_cpu() || result->as_register() == rax, "word returns are in rax,");
574 if (!result->is_illegal() && result->is_float_kind() && !result->is_xmm_register()) {
575 assert(result->fpu() == 0, "result must already be on TOS");
576 }
577
578 // Pop the stack before the safepoint code
579 __ remove_frame(initial_frame_size_in_bytes());
580
581 bool result_is_oop = result->is_valid() ? result->is_oop() : false;
582
583 // Note: we do not need to round double result; float result has the right precision
584 // the poll sets the condition code, but no data registers
585 AddressLiteral polling_page(os::get_polling_page() + (SafepointPollOffset % os::vm_page_size()),
586 relocInfo::poll_return_type);
587
588 if (Assembler::is_polling_page_far()) {
589 __ lea(rscratch1, polling_page);
590 __ relocate(relocInfo::poll_return_type);
591 __ testl(rax, Address(rscratch1, 0));
592 } else {
593 __ testl(rax, polling_page);
594 }
595 __ ret(0);
596 }
597
598
599 int LIR_Assembler::safepoint_poll(LIR_Opr tmp, CodeEmitInfo* info) {
600 AddressLiteral polling_page(os::get_polling_page() + (SafepointPollOffset % os::vm_page_size()),
601 relocInfo::poll_type);
602 guarantee(info != NULL, "Shouldn't be NULL");
603 int offset = __ offset();
604 if (Assembler::is_polling_page_far()) {
605 __ lea(rscratch1, polling_page);
606 offset = __ offset();
607 add_debug_info_for_branch(info);
608 __ testl(rax, Address(rscratch1, 0));
609 } else {
610 add_debug_info_for_branch(info);
611 __ testl(rax, polling_page);
612 }
613 return offset;
614 }
615
616
617 void LIR_Assembler::move_regs(Register from_reg, Register to_reg) {
618 if (from_reg != to_reg) __ mov(to_reg, from_reg);
619 }
620
621 void LIR_Assembler::swap_reg(Register a, Register b) {
622 __ xchgptr(a, b);
623 }
624
625
626 void LIR_Assembler::const2reg(LIR_Opr src, LIR_Opr dest, LIR_PatchCode patch_code, CodeEmitInfo* info) {
627 assert(src->is_constant(), "should not call otherwise");
628 assert(dest->is_register(), "should not call otherwise");
629 LIR_Const* c = src->as_constant_ptr();
630
631 switch (c->type()) {
632 case T_INT: {
633 assert(patch_code == lir_patch_none, "no patching handled here");
634 __ movl(dest->as_register(), c->as_jint());
635 break;
636 }
637
638 case T_ADDRESS: {
639 assert(patch_code == lir_patch_none, "no patching handled here");
640 __ movptr(dest->as_register(), c->as_jint());
641 break;
642 }
643
644 case T_LONG: {
645 assert(patch_code == lir_patch_none, "no patching handled here");
646 #ifdef _LP64
647 __ movptr(dest->as_register_lo(), (intptr_t)c->as_jlong());
648 #else
649 __ movptr(dest->as_register_lo(), c->as_jint_lo());
650 __ movptr(dest->as_register_hi(), c->as_jint_hi());
651 #endif // _LP64
652 break;
653 }
654
655 case T_OBJECT: {
656 if (patch_code != lir_patch_none) {
657 jobject2reg_with_patching(dest->as_register(), info);
658 } else {
659 __ movoop(dest->as_register(), c->as_jobject());
660 }
661 break;
662 }
663
664 case T_FLOAT: {
665 if (dest->is_single_xmm()) {
666 if (c->is_zero_float()) {
667 __ xorps(dest->as_xmm_float_reg(), dest->as_xmm_float_reg());
668 } else {
669 __ movflt(dest->as_xmm_float_reg(),
670 InternalAddress(float_constant(c->as_jfloat())));
671 }
672 } else {
673 assert(dest->is_single_fpu(), "must be");
674 assert(dest->fpu_regnr() == 0, "dest must be TOS");
675 if (c->is_zero_float()) {
676 __ fldz();
677 } else if (c->is_one_float()) {
678 __ fld1();
679 } else {
680 __ fld_s (InternalAddress(float_constant(c->as_jfloat())));
681 }
682 }
683 break;
684 }
685
686 case T_DOUBLE: {
687 if (dest->is_double_xmm()) {
688 if (c->is_zero_double()) {
689 __ xorpd(dest->as_xmm_double_reg(), dest->as_xmm_double_reg());
690 } else {
691 __ movdbl(dest->as_xmm_double_reg(),
692 InternalAddress(double_constant(c->as_jdouble())));
693 }
694 } else {
695 assert(dest->is_double_fpu(), "must be");
696 assert(dest->fpu_regnrLo() == 0, "dest must be TOS");
697 if (c->is_zero_double()) {
698 __ fldz();
699 } else if (c->is_one_double()) {
700 __ fld1();
701 } else {
702 __ fld_d (InternalAddress(double_constant(c->as_jdouble())));
703 }
704 }
705 break;
706 }
707
708 default:
709 ShouldNotReachHere();
710 }
711 }
712
713 void LIR_Assembler::const2stack(LIR_Opr src, LIR_Opr dest) {
714 assert(src->is_constant(), "should not call otherwise");
715 assert(dest->is_stack(), "should not call otherwise");
716 LIR_Const* c = src->as_constant_ptr();
717
718 switch (c->type()) {
719 case T_INT: // fall through
720 case T_FLOAT:
721 __ movl(frame_map()->address_for_slot(dest->single_stack_ix()), c->as_jint_bits());
722 break;
723
724 case T_ADDRESS:
725 __ movptr(frame_map()->address_for_slot(dest->single_stack_ix()), c->as_jint_bits());
726 break;
727
728 case T_OBJECT:
729 __ movoop(frame_map()->address_for_slot(dest->single_stack_ix()), c->as_jobject());
730 break;
731
732 case T_LONG: // fall through
733 case T_DOUBLE:
734 #ifdef _LP64
735 __ movptr(frame_map()->address_for_slot(dest->double_stack_ix(),
736 lo_word_offset_in_bytes), (intptr_t)c->as_jlong_bits());
737 #else
738 __ movptr(frame_map()->address_for_slot(dest->double_stack_ix(),
739 lo_word_offset_in_bytes), c->as_jint_lo_bits());
740 __ movptr(frame_map()->address_for_slot(dest->double_stack_ix(),
741 hi_word_offset_in_bytes), c->as_jint_hi_bits());
742 #endif // _LP64
743 break;
744
745 default:
746 ShouldNotReachHere();
747 }
748 }
749
750 void LIR_Assembler::const2mem(LIR_Opr src, LIR_Opr dest, BasicType type, CodeEmitInfo* info, bool wide) {
751 assert(src->is_constant(), "should not call otherwise");
752 assert(dest->is_address(), "should not call otherwise");
753 LIR_Const* c = src->as_constant_ptr();
754 LIR_Address* addr = dest->as_address_ptr();
755
756 int null_check_here = code_offset();
757 switch (type) {
758 case T_INT: // fall through
759 case T_FLOAT:
760 __ movl(as_Address(addr), c->as_jint_bits());
761 break;
762
763 case T_ADDRESS:
764 __ movptr(as_Address(addr), c->as_jint_bits());
765 break;
766
767 case T_OBJECT: // fall through
768 case T_ARRAY:
769 if (c->as_jobject() == NULL) {
770 if (UseCompressedOops && !wide) {
771 __ movl(as_Address(addr), (int32_t)NULL_WORD);
772 } else {
773 __ movptr(as_Address(addr), NULL_WORD);
774 }
775 } else {
776 if (is_literal_address(addr)) {
777 ShouldNotReachHere();
778 __ movoop(as_Address(addr, noreg), c->as_jobject());
779 } else {
780 #ifdef _LP64
781 __ movoop(rscratch1, c->as_jobject());
782 if (UseCompressedOops && !wide) {
783 __ encode_heap_oop(rscratch1);
784 null_check_here = code_offset();
785 __ movl(as_Address_lo(addr), rscratch1);
786 } else {
787 null_check_here = code_offset();
788 __ movptr(as_Address_lo(addr), rscratch1);
789 }
790 #else
791 __ movoop(as_Address(addr), c->as_jobject());
792 #endif
793 }
794 }
795 break;
796
797 case T_LONG: // fall through
798 case T_DOUBLE:
799 #ifdef _LP64
800 if (is_literal_address(addr)) {
801 ShouldNotReachHere();
802 __ movptr(as_Address(addr, r15_thread), (intptr_t)c->as_jlong_bits());
803 } else {
804 __ movptr(r10, (intptr_t)c->as_jlong_bits());
805 null_check_here = code_offset();
806 __ movptr(as_Address_lo(addr), r10);
807 }
808 #else
809 // Always reachable in 32bit so this doesn't produce useless move literal
810 __ movptr(as_Address_hi(addr), c->as_jint_hi_bits());
811 __ movptr(as_Address_lo(addr), c->as_jint_lo_bits());
812 #endif // _LP64
813 break;
814
815 case T_BOOLEAN: // fall through
816 case T_BYTE:
817 __ movb(as_Address(addr), c->as_jint() & 0xFF);
818 break;
819
820 case T_CHAR: // fall through
821 case T_SHORT:
822 __ movw(as_Address(addr), c->as_jint() & 0xFFFF);
823 break;
824
825 default:
826 ShouldNotReachHere();
827 };
828
829 if (info != NULL) {
830 add_debug_info_for_null_check(null_check_here, info);
831 }
832 }
833
834
835 void LIR_Assembler::reg2reg(LIR_Opr src, LIR_Opr dest) {
836 assert(src->is_register(), "should not call otherwise");
837 assert(dest->is_register(), "should not call otherwise");
838
839 // move between cpu-registers
840 if (dest->is_single_cpu()) {
841 #ifdef _LP64
842 if (src->type() == T_LONG) {
843 // Can do LONG -> OBJECT
844 move_regs(src->as_register_lo(), dest->as_register());
845 return;
846 }
847 #endif
848 assert(src->is_single_cpu(), "must match");
849 if (src->type() == T_OBJECT) {
850 __ verify_oop(src->as_register());
851 }
852 move_regs(src->as_register(), dest->as_register());
853
854 } else if (dest->is_double_cpu()) {
855 #ifdef _LP64
856 if (src->type() == T_OBJECT || src->type() == T_ARRAY) {
857 // Surprising to me but we can see move of a long to t_object
858 __ verify_oop(src->as_register());
859 move_regs(src->as_register(), dest->as_register_lo());
860 return;
861 }
862 #endif
863 assert(src->is_double_cpu(), "must match");
864 Register f_lo = src->as_register_lo();
865 Register f_hi = src->as_register_hi();
866 Register t_lo = dest->as_register_lo();
867 Register t_hi = dest->as_register_hi();
868 #ifdef _LP64
869 assert(f_hi == f_lo, "must be same");
870 assert(t_hi == t_lo, "must be same");
871 move_regs(f_lo, t_lo);
872 #else
873 assert(f_lo != f_hi && t_lo != t_hi, "invalid register allocation");
874
875
876 if (f_lo == t_hi && f_hi == t_lo) {
877 swap_reg(f_lo, f_hi);
878 } else if (f_hi == t_lo) {
879 assert(f_lo != t_hi, "overwriting register");
880 move_regs(f_hi, t_hi);
881 move_regs(f_lo, t_lo);
882 } else {
883 assert(f_hi != t_lo, "overwriting register");
884 move_regs(f_lo, t_lo);
885 move_regs(f_hi, t_hi);
886 }
887 #endif // LP64
888
889 // special moves from fpu-register to xmm-register
890 // necessary for method results
891 } else if (src->is_single_xmm() && !dest->is_single_xmm()) {
892 __ movflt(Address(rsp, 0), src->as_xmm_float_reg());
893 __ fld_s(Address(rsp, 0));
894 } else if (src->is_double_xmm() && !dest->is_double_xmm()) {
895 __ movdbl(Address(rsp, 0), src->as_xmm_double_reg());
896 __ fld_d(Address(rsp, 0));
897 } else if (dest->is_single_xmm() && !src->is_single_xmm()) {
898 __ fstp_s(Address(rsp, 0));
899 __ movflt(dest->as_xmm_float_reg(), Address(rsp, 0));
900 } else if (dest->is_double_xmm() && !src->is_double_xmm()) {
901 __ fstp_d(Address(rsp, 0));
902 __ movdbl(dest->as_xmm_double_reg(), Address(rsp, 0));
903
904 // move between xmm-registers
905 } else if (dest->is_single_xmm()) {
906 assert(src->is_single_xmm(), "must match");
907 __ movflt(dest->as_xmm_float_reg(), src->as_xmm_float_reg());
908 } else if (dest->is_double_xmm()) {
909 assert(src->is_double_xmm(), "must match");
910 __ movdbl(dest->as_xmm_double_reg(), src->as_xmm_double_reg());
911
912 // move between fpu-registers (no instruction necessary because of fpu-stack)
913 } else if (dest->is_single_fpu() || dest->is_double_fpu()) {
914 assert(src->is_single_fpu() || src->is_double_fpu(), "must match");
915 assert(src->fpu() == dest->fpu(), "currently should be nothing to do");
916 } else {
917 ShouldNotReachHere();
918 }
919 }
920
921 void LIR_Assembler::reg2stack(LIR_Opr src, LIR_Opr dest, BasicType type, bool pop_fpu_stack) {
922 assert(src->is_register(), "should not call otherwise");
923 assert(dest->is_stack(), "should not call otherwise");
924
925 if (src->is_single_cpu()) {
926 Address dst = frame_map()->address_for_slot(dest->single_stack_ix());
927 if (type == T_OBJECT || type == T_ARRAY) {
928 __ verify_oop(src->as_register());
929 __ movptr (dst, src->as_register());
930 } else {
931 __ movl (dst, src->as_register());
932 }
933
934 } else if (src->is_double_cpu()) {
935 Address dstLO = frame_map()->address_for_slot(dest->double_stack_ix(), lo_word_offset_in_bytes);
936 Address dstHI = frame_map()->address_for_slot(dest->double_stack_ix(), hi_word_offset_in_bytes);
937 __ movptr (dstLO, src->as_register_lo());
938 NOT_LP64(__ movptr (dstHI, src->as_register_hi()));
939
940 } else if (src->is_single_xmm()) {
941 Address dst_addr = frame_map()->address_for_slot(dest->single_stack_ix());
942 __ movflt(dst_addr, src->as_xmm_float_reg());
943
944 } else if (src->is_double_xmm()) {
945 Address dst_addr = frame_map()->address_for_slot(dest->double_stack_ix());
946 __ movdbl(dst_addr, src->as_xmm_double_reg());
947
948 } else if (src->is_single_fpu()) {
949 assert(src->fpu_regnr() == 0, "argument must be on TOS");
950 Address dst_addr = frame_map()->address_for_slot(dest->single_stack_ix());
951 if (pop_fpu_stack) __ fstp_s (dst_addr);
952 else __ fst_s (dst_addr);
953
954 } else if (src->is_double_fpu()) {
955 assert(src->fpu_regnrLo() == 0, "argument must be on TOS");
956 Address dst_addr = frame_map()->address_for_slot(dest->double_stack_ix());
957 if (pop_fpu_stack) __ fstp_d (dst_addr);
958 else __ fst_d (dst_addr);
959
960 } else {
961 ShouldNotReachHere();
962 }
963 }
964
965
966 void LIR_Assembler::reg2mem(LIR_Opr src, LIR_Opr dest, BasicType type, LIR_PatchCode patch_code, CodeEmitInfo* info, bool pop_fpu_stack, bool wide, bool /* unaligned */) {
967 LIR_Address* to_addr = dest->as_address_ptr();
968 PatchingStub* patch = NULL;
969 Register compressed_src = rscratch1;
970
971 if (type == T_ARRAY || type == T_OBJECT) {
972 __ verify_oop(src->as_register());
973 #ifdef _LP64
974 if (UseCompressedOops && !wide) {
975 __ movptr(compressed_src, src->as_register());
976 __ encode_heap_oop(compressed_src);
977 }
978 #endif
979 }
980
981 if (patch_code != lir_patch_none) {
982 patch = new PatchingStub(_masm, PatchingStub::access_field_id);
983 Address toa = as_Address(to_addr);
984 assert(toa.disp() != 0, "must have");
985 }
986
987 int null_check_here = code_offset();
988 switch (type) {
989 case T_FLOAT: {
990 if (src->is_single_xmm()) {
991 __ movflt(as_Address(to_addr), src->as_xmm_float_reg());
992 } else {
993 assert(src->is_single_fpu(), "must be");
994 assert(src->fpu_regnr() == 0, "argument must be on TOS");
995 if (pop_fpu_stack) __ fstp_s(as_Address(to_addr));
996 else __ fst_s (as_Address(to_addr));
997 }
998 break;
999 }
1000
1001 case T_DOUBLE: {
1002 if (src->is_double_xmm()) {
1003 __ movdbl(as_Address(to_addr), src->as_xmm_double_reg());
1004 } else {
1005 assert(src->is_double_fpu(), "must be");
1006 assert(src->fpu_regnrLo() == 0, "argument must be on TOS");
1007 if (pop_fpu_stack) __ fstp_d(as_Address(to_addr));
1008 else __ fst_d (as_Address(to_addr));
1009 }
1010 break;
1011 }
1012
1013 case T_ARRAY: // fall through
1014 case T_OBJECT: // fall through
1015 if (UseCompressedOops && !wide) {
1016 __ movl(as_Address(to_addr), compressed_src);
1017 } else {
1018 __ movptr(as_Address(to_addr), src->as_register());
1019 }
1020 break;
1021 case T_ADDRESS:
1022 __ movptr(as_Address(to_addr), src->as_register());
1023 break;
1024 case T_INT:
1025 __ movl(as_Address(to_addr), src->as_register());
1026 break;
1027
1028 case T_LONG: {
1029 Register from_lo = src->as_register_lo();
1030 Register from_hi = src->as_register_hi();
1031 #ifdef _LP64
1032 __ movptr(as_Address_lo(to_addr), from_lo);
1033 #else
1034 Register base = to_addr->base()->as_register();
1035 Register index = noreg;
1036 if (to_addr->index()->is_register()) {
1037 index = to_addr->index()->as_register();
1038 }
1039 if (base == from_lo || index == from_lo) {
1040 assert(base != from_hi, "can't be");
1041 assert(index == noreg || (index != base && index != from_hi), "can't handle this");
1042 __ movl(as_Address_hi(to_addr), from_hi);
1043 if (patch != NULL) {
1044 patching_epilog(patch, lir_patch_high, base, info);
1045 patch = new PatchingStub(_masm, PatchingStub::access_field_id);
1046 patch_code = lir_patch_low;
1047 }
1048 __ movl(as_Address_lo(to_addr), from_lo);
1049 } else {
1050 assert(index == noreg || (index != base && index != from_lo), "can't handle this");
1051 __ movl(as_Address_lo(to_addr), from_lo);
1052 if (patch != NULL) {
1053 patching_epilog(patch, lir_patch_low, base, info);
1054 patch = new PatchingStub(_masm, PatchingStub::access_field_id);
1055 patch_code = lir_patch_high;
1056 }
1057 __ movl(as_Address_hi(to_addr), from_hi);
1058 }
1059 #endif // _LP64
1060 break;
1061 }
1062
1063 case T_BYTE: // fall through
1064 case T_BOOLEAN: {
1065 Register src_reg = src->as_register();
1066 Address dst_addr = as_Address(to_addr);
1067 assert(VM_Version::is_P6() || src_reg->has_byte_register(), "must use byte registers if not P6");
1068 __ movb(dst_addr, src_reg);
1069 break;
1070 }
1071
1072 case T_CHAR: // fall through
1073 case T_SHORT:
1074 __ movw(as_Address(to_addr), src->as_register());
1075 break;
1076
1077 default:
1078 ShouldNotReachHere();
1079 }
1080 if (info != NULL) {
1081 add_debug_info_for_null_check(null_check_here, info);
1082 }
1083
1084 if (patch_code != lir_patch_none) {
1085 patching_epilog(patch, patch_code, to_addr->base()->as_register(), info);
1086 }
1087 }
1088
1089
1090 void LIR_Assembler::stack2reg(LIR_Opr src, LIR_Opr dest, BasicType type) {
1091 assert(src->is_stack(), "should not call otherwise");
1092 assert(dest->is_register(), "should not call otherwise");
1093
1094 if (dest->is_single_cpu()) {
1095 if (type == T_ARRAY || type == T_OBJECT) {
1096 __ movptr(dest->as_register(), frame_map()->address_for_slot(src->single_stack_ix()));
1097 __ verify_oop(dest->as_register());
1098 } else {
1099 __ movl(dest->as_register(), frame_map()->address_for_slot(src->single_stack_ix()));
1100 }
1101
1102 } else if (dest->is_double_cpu()) {
1103 Address src_addr_LO = frame_map()->address_for_slot(src->double_stack_ix(), lo_word_offset_in_bytes);
1104 Address src_addr_HI = frame_map()->address_for_slot(src->double_stack_ix(), hi_word_offset_in_bytes);
1105 __ movptr(dest->as_register_lo(), src_addr_LO);
1106 NOT_LP64(__ movptr(dest->as_register_hi(), src_addr_HI));
1107
1108 } else if (dest->is_single_xmm()) {
1109 Address src_addr = frame_map()->address_for_slot(src->single_stack_ix());
1110 __ movflt(dest->as_xmm_float_reg(), src_addr);
1111
1112 } else if (dest->is_double_xmm()) {
1113 Address src_addr = frame_map()->address_for_slot(src->double_stack_ix());
1114 __ movdbl(dest->as_xmm_double_reg(), src_addr);
1115
1116 } else if (dest->is_single_fpu()) {
1117 assert(dest->fpu_regnr() == 0, "dest must be TOS");
1118 Address src_addr = frame_map()->address_for_slot(src->single_stack_ix());
1119 __ fld_s(src_addr);
1120
1121 } else if (dest->is_double_fpu()) {
1122 assert(dest->fpu_regnrLo() == 0, "dest must be TOS");
1123 Address src_addr = frame_map()->address_for_slot(src->double_stack_ix());
1124 __ fld_d(src_addr);
1125
1126 } else {
1127 ShouldNotReachHere();
1128 }
1129 }
1130
1131
1132 void LIR_Assembler::stack2stack(LIR_Opr src, LIR_Opr dest, BasicType type) {
1133 if (src->is_single_stack()) {
1134 if (type == T_OBJECT || type == T_ARRAY) {
1135 __ pushptr(frame_map()->address_for_slot(src ->single_stack_ix()));
1136 __ popptr (frame_map()->address_for_slot(dest->single_stack_ix()));
1137 } else {
1138 #ifndef _LP64
1139 __ pushl(frame_map()->address_for_slot(src ->single_stack_ix()));
1140 __ popl (frame_map()->address_for_slot(dest->single_stack_ix()));
1141 #else
1142 //no pushl on 64bits
1143 __ movl(rscratch1, frame_map()->address_for_slot(src ->single_stack_ix()));
1144 __ movl(frame_map()->address_for_slot(dest->single_stack_ix()), rscratch1);
1145 #endif
1146 }
1147
1148 } else if (src->is_double_stack()) {
1149 #ifdef _LP64
1150 __ pushptr(frame_map()->address_for_slot(src ->double_stack_ix()));
1151 __ popptr (frame_map()->address_for_slot(dest->double_stack_ix()));
1152 #else
1153 __ pushl(frame_map()->address_for_slot(src ->double_stack_ix(), 0));
1154 // push and pop the part at src + wordSize, adding wordSize for the previous push
1155 __ pushl(frame_map()->address_for_slot(src ->double_stack_ix(), 2 * wordSize));
1156 __ popl (frame_map()->address_for_slot(dest->double_stack_ix(), 2 * wordSize));
1157 __ popl (frame_map()->address_for_slot(dest->double_stack_ix(), 0));
1158 #endif // _LP64
1159
1160 } else {
1161 ShouldNotReachHere();
1162 }
1163 }
1164
1165
1166 void LIR_Assembler::mem2reg(LIR_Opr src, LIR_Opr dest, BasicType type, LIR_PatchCode patch_code, CodeEmitInfo* info, bool wide, bool /* unaligned */) {
1167 assert(src->is_address(), "should not call otherwise");
1168 assert(dest->is_register(), "should not call otherwise");
1169
1170 LIR_Address* addr = src->as_address_ptr();
1171 Address from_addr = as_Address(addr);
1172
1173 switch (type) {
1174 case T_BOOLEAN: // fall through
1175 case T_BYTE: // fall through
1176 case T_CHAR: // fall through
1177 case T_SHORT:
1178 if (!VM_Version::is_P6() && !from_addr.uses(dest->as_register())) {
1179 // on pre P6 processors we may get partial register stalls
1180 // so blow away the value of to_rinfo before loading a
1181 // partial word into it. Do it here so that it precedes
1182 // the potential patch point below.
1183 __ xorptr(dest->as_register(), dest->as_register());
1184 }
1185 break;
1186 }
1187
1188 PatchingStub* patch = NULL;
1189 if (patch_code != lir_patch_none) {
1190 patch = new PatchingStub(_masm, PatchingStub::access_field_id);
1191 assert(from_addr.disp() != 0, "must have");
1192 }
1193 if (info != NULL) {
1194 add_debug_info_for_null_check_here(info);
1195 }
1196
1197 switch (type) {
1198 case T_FLOAT: {
1199 if (dest->is_single_xmm()) {
1200 __ movflt(dest->as_xmm_float_reg(), from_addr);
1201 } else {
1202 assert(dest->is_single_fpu(), "must be");
1203 assert(dest->fpu_regnr() == 0, "dest must be TOS");
1204 __ fld_s(from_addr);
1205 }
1206 break;
1207 }
1208
1209 case T_DOUBLE: {
1210 if (dest->is_double_xmm()) {
1211 __ movdbl(dest->as_xmm_double_reg(), from_addr);
1212 } else {
1213 assert(dest->is_double_fpu(), "must be");
1214 assert(dest->fpu_regnrLo() == 0, "dest must be TOS");
1215 __ fld_d(from_addr);
1216 }
1217 break;
1218 }
1219
1220 case T_OBJECT: // fall through
1221 case T_ARRAY: // fall through
1222 if (UseCompressedOops && !wide) {
1223 __ movl(dest->as_register(), from_addr);
1224 } else {
1225 __ movptr(dest->as_register(), from_addr);
1226 }
1227 break;
1228
1229 case T_ADDRESS:
1230 __ movptr(dest->as_register(), from_addr);
1231 break;
1232 case T_INT:
1233 __ movl(dest->as_register(), from_addr);
1234 break;
1235
1236 case T_LONG: {
1237 Register to_lo = dest->as_register_lo();
1238 Register to_hi = dest->as_register_hi();
1239 #ifdef _LP64
1240 __ movptr(to_lo, as_Address_lo(addr));
1241 #else
1242 Register base = addr->base()->as_register();
1243 Register index = noreg;
1244 if (addr->index()->is_register()) {
1245 index = addr->index()->as_register();
1246 }
1247 if ((base == to_lo && index == to_hi) ||
1248 (base == to_hi && index == to_lo)) {
1249 // addresses with 2 registers are only formed as a result of
1250 // array access so this code will never have to deal with
1251 // patches or null checks.
1252 assert(info == NULL && patch == NULL, "must be");
1253 __ lea(to_hi, as_Address(addr));
1254 __ movl(to_lo, Address(to_hi, 0));
1255 __ movl(to_hi, Address(to_hi, BytesPerWord));
1256 } else if (base == to_lo || index == to_lo) {
1257 assert(base != to_hi, "can't be");
1258 assert(index == noreg || (index != base && index != to_hi), "can't handle this");
1259 __ movl(to_hi, as_Address_hi(addr));
1260 if (patch != NULL) {
1261 patching_epilog(patch, lir_patch_high, base, info);
1262 patch = new PatchingStub(_masm, PatchingStub::access_field_id);
1263 patch_code = lir_patch_low;
1264 }
1265 __ movl(to_lo, as_Address_lo(addr));
1266 } else {
1267 assert(index == noreg || (index != base && index != to_lo), "can't handle this");
1268 __ movl(to_lo, as_Address_lo(addr));
1269 if (patch != NULL) {
1270 patching_epilog(patch, lir_patch_low, base, info);
1271 patch = new PatchingStub(_masm, PatchingStub::access_field_id);
1272 patch_code = lir_patch_high;
1273 }
1274 __ movl(to_hi, as_Address_hi(addr));
1275 }
1276 #endif // _LP64
1277 break;
1278 }
1279
1280 case T_BOOLEAN: // fall through
1281 case T_BYTE: {
1282 Register dest_reg = dest->as_register();
1283 assert(VM_Version::is_P6() || dest_reg->has_byte_register(), "must use byte registers if not P6");
1284 if (VM_Version::is_P6() || from_addr.uses(dest_reg)) {
1285 __ movsbl(dest_reg, from_addr);
1286 } else {
1287 __ movb(dest_reg, from_addr);
1288 __ shll(dest_reg, 24);
1289 __ sarl(dest_reg, 24);
1290 }
1291 break;
1292 }
1293
1294 case T_CHAR: {
1295 Register dest_reg = dest->as_register();
1296 assert(VM_Version::is_P6() || dest_reg->has_byte_register(), "must use byte registers if not P6");
1297 if (VM_Version::is_P6() || from_addr.uses(dest_reg)) {
1298 __ movzwl(dest_reg, from_addr);
1299 } else {
1300 __ movw(dest_reg, from_addr);
1301 }
1302 break;
1303 }
1304
1305 case T_SHORT: {
1306 Register dest_reg = dest->as_register();
1307 if (VM_Version::is_P6() || from_addr.uses(dest_reg)) {
1308 __ movswl(dest_reg, from_addr);
1309 } else {
1310 __ movw(dest_reg, from_addr);
1311 __ shll(dest_reg, 16);
1312 __ sarl(dest_reg, 16);
1313 }
1314 break;
1315 }
1316
1317 default:
1318 ShouldNotReachHere();
1319 }
1320
1321 if (patch != NULL) {
1322 patching_epilog(patch, patch_code, addr->base()->as_register(), info);
1323 }
1324
1325 if (type == T_ARRAY || type == T_OBJECT) {
1326 #ifdef _LP64
1327 if (UseCompressedOops && !wide) {
1328 __ decode_heap_oop(dest->as_register());
1329 }
1330 #endif
1331 __ verify_oop(dest->as_register());
1332 }
1333 }
1334
1335
1336 void LIR_Assembler::prefetchr(LIR_Opr src) {
1337 LIR_Address* addr = src->as_address_ptr();
1338 Address from_addr = as_Address(addr);
1339
1340 if (VM_Version::supports_sse()) {
1341 switch (ReadPrefetchInstr) {
1342 case 0:
1343 __ prefetchnta(from_addr); break;
1344 case 1:
1345 __ prefetcht0(from_addr); break;
1346 case 2:
1347 __ prefetcht2(from_addr); break;
1348 default:
1349 ShouldNotReachHere(); break;
1350 }
1351 } else if (VM_Version::supports_3dnow_prefetch()) {
1352 __ prefetchr(from_addr);
1353 }
1354 }
1355
1356
1357 void LIR_Assembler::prefetchw(LIR_Opr src) {
1358 LIR_Address* addr = src->as_address_ptr();
1359 Address from_addr = as_Address(addr);
1360
1361 if (VM_Version::supports_sse()) {
1362 switch (AllocatePrefetchInstr) {
1363 case 0:
1364 __ prefetchnta(from_addr); break;
1365 case 1:
1366 __ prefetcht0(from_addr); break;
1367 case 2:
1368 __ prefetcht2(from_addr); break;
1369 case 3:
1370 __ prefetchw(from_addr); break;
1371 default:
1372 ShouldNotReachHere(); break;
1373 }
1374 } else if (VM_Version::supports_3dnow_prefetch()) {
1375 __ prefetchw(from_addr);
1376 }
1377 }
1378
1379
1380 NEEDS_CLEANUP; // This could be static?
1381 Address::ScaleFactor LIR_Assembler::array_element_size(BasicType type) const {
1382 int elem_size = type2aelembytes(type);
1383 switch (elem_size) {
1384 case 1: return Address::times_1;
1385 case 2: return Address::times_2;
1386 case 4: return Address::times_4;
1387 case 8: return Address::times_8;
1388 }
1389 ShouldNotReachHere();
1390 return Address::no_scale;
1391 }
1392
1393
1394 void LIR_Assembler::emit_op3(LIR_Op3* op) {
1395 switch (op->code()) {
1396 case lir_idiv:
1397 case lir_irem:
1398 arithmetic_idiv(op->code(),
1399 op->in_opr1(),
1400 op->in_opr2(),
1401 op->in_opr3(),
1402 op->result_opr(),
1403 op->info());
1404 break;
1405 default: ShouldNotReachHere(); break;
1406 }
1407 }
1408
1409 void LIR_Assembler::emit_opBranch(LIR_OpBranch* op) {
1410 #ifdef ASSERT
1411 assert(op->block() == NULL || op->block()->label() == op->label(), "wrong label");
1412 if (op->block() != NULL) _branch_target_blocks.append(op->block());
1413 if (op->ublock() != NULL) _branch_target_blocks.append(op->ublock());
1414 #endif
1415
1416 if (op->cond() == lir_cond_always) {
1417 if (op->info() != NULL) add_debug_info_for_branch(op->info());
1418 __ jmp (*(op->label()));
1419 } else {
1420 Assembler::Condition acond = Assembler::zero;
1421 if (op->code() == lir_cond_float_branch) {
1422 assert(op->ublock() != NULL, "must have unordered successor");
1423 __ jcc(Assembler::parity, *(op->ublock()->label()));
1424 switch(op->cond()) {
1425 case lir_cond_equal: acond = Assembler::equal; break;
1426 case lir_cond_notEqual: acond = Assembler::notEqual; break;
1427 case lir_cond_less: acond = Assembler::below; break;
1428 case lir_cond_lessEqual: acond = Assembler::belowEqual; break;
1429 case lir_cond_greaterEqual: acond = Assembler::aboveEqual; break;
1430 case lir_cond_greater: acond = Assembler::above; break;
1431 default: ShouldNotReachHere();
1432 }
1433 } else {
1434 switch (op->cond()) {
1435 case lir_cond_equal: acond = Assembler::equal; break;
1436 case lir_cond_notEqual: acond = Assembler::notEqual; break;
1437 case lir_cond_less: acond = Assembler::less; break;
1438 case lir_cond_lessEqual: acond = Assembler::lessEqual; break;
1439 case lir_cond_greaterEqual: acond = Assembler::greaterEqual;break;
1440 case lir_cond_greater: acond = Assembler::greater; break;
1441 case lir_cond_belowEqual: acond = Assembler::belowEqual; break;
1442 case lir_cond_aboveEqual: acond = Assembler::aboveEqual; break;
1443 default: ShouldNotReachHere();
1444 }
1445 }
1446 __ jcc(acond,*(op->label()));
1447 }
1448 }
1449
1450 void LIR_Assembler::emit_opConvert(LIR_OpConvert* op) {
1451 LIR_Opr src = op->in_opr();
1452 LIR_Opr dest = op->result_opr();
1453
1454 switch (op->bytecode()) {
1455 case Bytecodes::_i2l:
1456 #ifdef _LP64
1457 __ movl2ptr(dest->as_register_lo(), src->as_register());
1458 #else
1459 move_regs(src->as_register(), dest->as_register_lo());
1460 move_regs(src->as_register(), dest->as_register_hi());
1461 __ sarl(dest->as_register_hi(), 31);
1462 #endif // LP64
1463 break;
1464
1465 case Bytecodes::_l2i:
1466 move_regs(src->as_register_lo(), dest->as_register());
1467 break;
1468
1469 case Bytecodes::_i2b:
1470 move_regs(src->as_register(), dest->as_register());
1471 __ sign_extend_byte(dest->as_register());
1472 break;
1473
1474 case Bytecodes::_i2c:
1475 move_regs(src->as_register(), dest->as_register());
1476 __ andl(dest->as_register(), 0xFFFF);
1477 break;
1478
1479 case Bytecodes::_i2s:
1480 move_regs(src->as_register(), dest->as_register());
1481 __ sign_extend_short(dest->as_register());
1482 break;
1483
1484
1485 case Bytecodes::_f2d:
1486 case Bytecodes::_d2f:
1487 if (dest->is_single_xmm()) {
1488 __ cvtsd2ss(dest->as_xmm_float_reg(), src->as_xmm_double_reg());
1489 } else if (dest->is_double_xmm()) {
1490 __ cvtss2sd(dest->as_xmm_double_reg(), src->as_xmm_float_reg());
1491 } else {
1492 assert(src->fpu() == dest->fpu(), "register must be equal");
1493 // do nothing (float result is rounded later through spilling)
1494 }
1495 break;
1496
1497 case Bytecodes::_i2f:
1498 case Bytecodes::_i2d:
1499 if (dest->is_single_xmm()) {
1500 __ cvtsi2ssl(dest->as_xmm_float_reg(), src->as_register());
1501 } else if (dest->is_double_xmm()) {
1502 __ cvtsi2sdl(dest->as_xmm_double_reg(), src->as_register());
1503 } else {
1504 assert(dest->fpu() == 0, "result must be on TOS");
1505 __ movl(Address(rsp, 0), src->as_register());
1506 __ fild_s(Address(rsp, 0));
1507 }
1508 break;
1509
1510 case Bytecodes::_f2i:
1511 case Bytecodes::_d2i:
1512 if (src->is_single_xmm()) {
1513 __ cvttss2sil(dest->as_register(), src->as_xmm_float_reg());
1514 } else if (src->is_double_xmm()) {
1515 __ cvttsd2sil(dest->as_register(), src->as_xmm_double_reg());
1516 } else {
1517 assert(src->fpu() == 0, "input must be on TOS");
1518 __ fldcw(ExternalAddress(StubRoutines::addr_fpu_cntrl_wrd_trunc()));
1519 __ fist_s(Address(rsp, 0));
1520 __ movl(dest->as_register(), Address(rsp, 0));
1521 __ fldcw(ExternalAddress(StubRoutines::addr_fpu_cntrl_wrd_std()));
1522 }
1523
1524 // IA32 conversion instructions do not match JLS for overflow, underflow and NaN -> fixup in stub
1525 assert(op->stub() != NULL, "stub required");
1526 __ cmpl(dest->as_register(), 0x80000000);
1527 __ jcc(Assembler::equal, *op->stub()->entry());
1528 __ bind(*op->stub()->continuation());
1529 break;
1530
1531 case Bytecodes::_l2f:
1532 case Bytecodes::_l2d:
1533 assert(!dest->is_xmm_register(), "result in xmm register not supported (no SSE instruction present)");
1534 assert(dest->fpu() == 0, "result must be on TOS");
1535
1536 __ movptr(Address(rsp, 0), src->as_register_lo());
1537 NOT_LP64(__ movl(Address(rsp, BytesPerWord), src->as_register_hi()));
1538 __ fild_d(Address(rsp, 0));
1539 // float result is rounded later through spilling
1540 break;
1541
1542 case Bytecodes::_f2l:
1543 case Bytecodes::_d2l:
1544 assert(!src->is_xmm_register(), "input in xmm register not supported (no SSE instruction present)");
1545 assert(src->fpu() == 0, "input must be on TOS");
1546 assert(dest == FrameMap::long0_opr, "runtime stub places result in these registers");
1547
1548 // instruction sequence too long to inline it here
1549 {
1550 __ call(RuntimeAddress(Runtime1::entry_for(Runtime1::fpu2long_stub_id)));
1551 }
1552 break;
1553
1554 default: ShouldNotReachHere();
1555 }
1556 }
1557
1558 void LIR_Assembler::emit_alloc_obj(LIR_OpAllocObj* op) {
1559 if (op->init_check()) {
1560 __ cmpl(Address(op->klass()->as_register(),
1561 instanceKlass::init_state_offset_in_bytes() + sizeof(oopDesc)),
1562 instanceKlass::fully_initialized);
1563 add_debug_info_for_null_check_here(op->stub()->info());
1564 __ jcc(Assembler::notEqual, *op->stub()->entry());
1565 }
1566 __ allocate_object(op->obj()->as_register(),
1567 op->tmp1()->as_register(),
1568 op->tmp2()->as_register(),
1569 op->header_size(),
1570 op->object_size(),
1571 op->klass()->as_register(),
1572 *op->stub()->entry());
1573 __ bind(*op->stub()->continuation());
1574 }
1575
1576 void LIR_Assembler::emit_alloc_array(LIR_OpAllocArray* op) {
1577 Register len = op->len()->as_register();
1578 LP64_ONLY( __ movslq(len, len); )
1579
1580 if (UseSlowPath ||
1581 (!UseFastNewObjectArray && (op->type() == T_OBJECT || op->type() == T_ARRAY)) ||
1582 (!UseFastNewTypeArray && (op->type() != T_OBJECT && op->type() != T_ARRAY))) {
1583 __ jmp(*op->stub()->entry());
1584 } else {
1585 Register tmp1 = op->tmp1()->as_register();
1586 Register tmp2 = op->tmp2()->as_register();
1587 Register tmp3 = op->tmp3()->as_register();
1588 if (len == tmp1) {
1589 tmp1 = tmp3;
1590 } else if (len == tmp2) {
1591 tmp2 = tmp3;
1592 } else if (len == tmp3) {
1593 // everything is ok
1594 } else {
1595 __ mov(tmp3, len);
1596 }
1597 __ allocate_array(op->obj()->as_register(),
1598 len,
1599 tmp1,
1600 tmp2,
1601 arrayOopDesc::header_size(op->type()),
1602 array_element_size(op->type()),
1603 op->klass()->as_register(),
1604 *op->stub()->entry());
1605 }
1606 __ bind(*op->stub()->continuation());
1607 }
1608
1609 void LIR_Assembler::type_profile_helper(Register mdo,
1610 ciMethodData *md, ciProfileData *data,
1611 Register recv, Label* update_done) {
1612 for (uint i = 0; i < ReceiverTypeData::row_limit(); i++) {
1613 Label next_test;
1614 // See if the receiver is receiver[n].
1615 __ cmpptr(recv, Address(mdo, md->byte_offset_of_slot(data, ReceiverTypeData::receiver_offset(i))));
1616 __ jccb(Assembler::notEqual, next_test);
1617 Address data_addr(mdo, md->byte_offset_of_slot(data, ReceiverTypeData::receiver_count_offset(i)));
1618 __ addptr(data_addr, DataLayout::counter_increment);
1619 __ jmp(*update_done);
1620 __ bind(next_test);
1621 }
1622
1623 // Didn't find receiver; find next empty slot and fill it in
1624 for (uint i = 0; i < ReceiverTypeData::row_limit(); i++) {
1625 Label next_test;
1626 Address recv_addr(mdo, md->byte_offset_of_slot(data, ReceiverTypeData::receiver_offset(i)));
1627 __ cmpptr(recv_addr, (intptr_t)NULL_WORD);
1628 __ jccb(Assembler::notEqual, next_test);
1629 __ movptr(recv_addr, recv);
1630 __ movptr(Address(mdo, md->byte_offset_of_slot(data, ReceiverTypeData::receiver_count_offset(i))), DataLayout::counter_increment);
1631 __ jmp(*update_done);
1632 __ bind(next_test);
1633 }
1634 }
1635
1636 void LIR_Assembler::emit_typecheck_helper(LIR_OpTypeCheck *op, Label* success, Label* failure, Label* obj_is_null) {
1637 // we always need a stub for the failure case.
1638 CodeStub* stub = op->stub();
1639 Register obj = op->object()->as_register();
1640 Register k_RInfo = op->tmp1()->as_register();
1641 Register klass_RInfo = op->tmp2()->as_register();
1642 Register dst = op->result_opr()->as_register();
1643 ciKlass* k = op->klass();
1644 Register Rtmp1 = noreg;
1645
1646 // check if it needs to be profiled
1647 ciMethodData* md;
1648 ciProfileData* data;
1649
1650 if (op->should_profile()) {
1651 ciMethod* method = op->profiled_method();
1652 assert(method != NULL, "Should have method");
1653 int bci = op->profiled_bci();
1654 md = method->method_data_or_null();
1655 assert(md != NULL, "Sanity");
1656 data = md->bci_to_data(bci);
1657 assert(data != NULL, "need data for type check");
1658 assert(data->is_ReceiverTypeData(), "need ReceiverTypeData for type check");
1659 }
1660 Label profile_cast_success, profile_cast_failure;
1661 Label *success_target = op->should_profile() ? &profile_cast_success : success;
1662 Label *failure_target = op->should_profile() ? &profile_cast_failure : failure;
1663
1664 if (obj == k_RInfo) {
1665 k_RInfo = dst;
1666 } else if (obj == klass_RInfo) {
1667 klass_RInfo = dst;
1668 }
1669 if (k->is_loaded() && !UseCompressedOops) {
1670 select_different_registers(obj, dst, k_RInfo, klass_RInfo);
1671 } else {
1672 Rtmp1 = op->tmp3()->as_register();
1673 select_different_registers(obj, dst, k_RInfo, klass_RInfo, Rtmp1);
1674 }
1675
1676 assert_different_registers(obj, k_RInfo, klass_RInfo);
1677 if (!k->is_loaded()) {
1678 jobject2reg_with_patching(k_RInfo, op->info_for_patch());
1679 } else {
1680 #ifdef _LP64
1681 __ movoop(k_RInfo, k->constant_encoding());
1682 #endif // _LP64
1683 }
1684 assert(obj != k_RInfo, "must be different");
1685
1686 __ cmpptr(obj, (int32_t)NULL_WORD);
1687 if (op->should_profile()) {
1688 Label not_null;
1689 __ jccb(Assembler::notEqual, not_null);
1690 // Object is null; update MDO and exit
1691 Register mdo = klass_RInfo;
1692 __ movoop(mdo, md->constant_encoding());
1693 Address data_addr(mdo, md->byte_offset_of_slot(data, DataLayout::header_offset()));
1694 int header_bits = DataLayout::flag_mask_to_header_mask(BitData::null_seen_byte_constant());
1695 __ orl(data_addr, header_bits);
1696 __ jmp(*obj_is_null);
1697 __ bind(not_null);
1698 } else {
1699 __ jcc(Assembler::equal, *obj_is_null);
1700 }
1701 __ verify_oop(obj);
1702
1703 if (op->fast_check()) {
1704 // get object class
1705 // not a safepoint as obj null check happens earlier
1706 #ifdef _LP64
1707 if (UseCompressedOops) {
1708 __ load_klass(Rtmp1, obj);
1709 __ cmpptr(k_RInfo, Rtmp1);
1710 } else {
1711 __ cmpptr(k_RInfo, Address(obj, oopDesc::klass_offset_in_bytes()));
1712 }
1713 #else
1714 if (k->is_loaded()) {
1715 __ cmpoop(Address(obj, oopDesc::klass_offset_in_bytes()), k->constant_encoding());
1716 } else {
1717 __ cmpptr(k_RInfo, Address(obj, oopDesc::klass_offset_in_bytes()));
1718 }
1719 #endif
1720 __ jcc(Assembler::notEqual, *failure_target);
1721 // successful cast, fall through to profile or jump
1722 } else {
1723 // get object class
1724 // not a safepoint as obj null check happens earlier
1725 __ load_klass(klass_RInfo, obj);
1726 if (k->is_loaded()) {
1727 // See if we get an immediate positive hit
1728 #ifdef _LP64
1729 __ cmpptr(k_RInfo, Address(klass_RInfo, k->super_check_offset()));
1730 #else
1731 __ cmpoop(Address(klass_RInfo, k->super_check_offset()), k->constant_encoding());
1732 #endif // _LP64
1733 if (sizeof(oopDesc) + Klass::secondary_super_cache_offset_in_bytes() != k->super_check_offset()) {
1734 __ jcc(Assembler::notEqual, *failure_target);
1735 // successful cast, fall through to profile or jump
1736 } else {
1737 // See if we get an immediate positive hit
1738 __ jcc(Assembler::equal, *success_target);
1739 // check for self
1740 #ifdef _LP64
1741 __ cmpptr(klass_RInfo, k_RInfo);
1742 #else
1743 __ cmpoop(klass_RInfo, k->constant_encoding());
1744 #endif // _LP64
1745 __ jcc(Assembler::equal, *success_target);
1746
1747 __ push(klass_RInfo);
1748 #ifdef _LP64
1749 __ push(k_RInfo);
1750 #else
1751 __ pushoop(k->constant_encoding());
1752 #endif // _LP64
1753 __ call(RuntimeAddress(Runtime1::entry_for(Runtime1::slow_subtype_check_id)));
1754 __ pop(klass_RInfo);
1755 __ pop(klass_RInfo);
1756 // result is a boolean
1757 __ cmpl(klass_RInfo, 0);
1758 __ jcc(Assembler::equal, *failure_target);
1759 // successful cast, fall through to profile or jump
1760 }
1761 } else {
1762 // perform the fast part of the checking logic
1763 __ check_klass_subtype_fast_path(klass_RInfo, k_RInfo, Rtmp1, success_target, failure_target, NULL);
1764 // call out-of-line instance of __ check_klass_subtype_slow_path(...):
1765 __ push(klass_RInfo);
1766 __ push(k_RInfo);
1767 __ call(RuntimeAddress(Runtime1::entry_for(Runtime1::slow_subtype_check_id)));
1768 __ pop(klass_RInfo);
1769 __ pop(k_RInfo);
1770 // result is a boolean
1771 __ cmpl(k_RInfo, 0);
1772 __ jcc(Assembler::equal, *failure_target);
1773 // successful cast, fall through to profile or jump
1774 }
1775 }
1776 if (op->should_profile()) {
1777 Register mdo = klass_RInfo, recv = k_RInfo;
1778 __ bind(profile_cast_success);
1779 __ movoop(mdo, md->constant_encoding());
1780 __ load_klass(recv, obj);
1781 Label update_done;
1782 type_profile_helper(mdo, md, data, recv, success);
1783 __ jmp(*success);
1784
1785 __ bind(profile_cast_failure);
1786 __ movoop(mdo, md->constant_encoding());
1787 Address counter_addr(mdo, md->byte_offset_of_slot(data, CounterData::count_offset()));
1788 __ subptr(counter_addr, DataLayout::counter_increment);
1789 __ jmp(*failure);
1790 }
1791 __ jmp(*success);
1792 }
1793
1794
1795 void LIR_Assembler::emit_opTypeCheck(LIR_OpTypeCheck* op) {
1796 LIR_Code code = op->code();
1797 if (code == lir_store_check) {
1798 Register value = op->object()->as_register();
1799 Register array = op->array()->as_register();
1800 Register k_RInfo = op->tmp1()->as_register();
1801 Register klass_RInfo = op->tmp2()->as_register();
1802 Register Rtmp1 = op->tmp3()->as_register();
1803
1804 CodeStub* stub = op->stub();
1805
1806 // check if it needs to be profiled
1807 ciMethodData* md;
1808 ciProfileData* data;
1809
1810 if (op->should_profile()) {
1811 ciMethod* method = op->profiled_method();
1812 assert(method != NULL, "Should have method");
1813 int bci = op->profiled_bci();
1814 md = method->method_data_or_null();
1815 assert(md != NULL, "Sanity");
1816 data = md->bci_to_data(bci);
1817 assert(data != NULL, "need data for type check");
1818 assert(data->is_ReceiverTypeData(), "need ReceiverTypeData for type check");
1819 }
1820 Label profile_cast_success, profile_cast_failure, done;
1821 Label *success_target = op->should_profile() ? &profile_cast_success : &done;
1822 Label *failure_target = op->should_profile() ? &profile_cast_failure : stub->entry();
1823
1824 __ cmpptr(value, (int32_t)NULL_WORD);
1825 if (op->should_profile()) {
1826 Label not_null;
1827 __ jccb(Assembler::notEqual, not_null);
1828 // Object is null; update MDO and exit
1829 Register mdo = klass_RInfo;
1830 __ movoop(mdo, md->constant_encoding());
1831 Address data_addr(mdo, md->byte_offset_of_slot(data, DataLayout::header_offset()));
1832 int header_bits = DataLayout::flag_mask_to_header_mask(BitData::null_seen_byte_constant());
1833 __ orl(data_addr, header_bits);
1834 __ jmp(done);
1835 __ bind(not_null);
1836 } else {
1837 __ jcc(Assembler::equal, done);
1838 }
1839
1840 add_debug_info_for_null_check_here(op->info_for_exception());
1841 __ load_klass(k_RInfo, array);
1842 __ load_klass(klass_RInfo, value);
1843
1844 // get instance klass (it's already uncompressed)
1845 __ movptr(k_RInfo, Address(k_RInfo, objArrayKlass::element_klass_offset_in_bytes() + sizeof(oopDesc)));
1846 // perform the fast part of the checking logic
1847 __ check_klass_subtype_fast_path(klass_RInfo, k_RInfo, Rtmp1, success_target, failure_target, NULL);
1848 // call out-of-line instance of __ check_klass_subtype_slow_path(...):
1849 __ push(klass_RInfo);
1850 __ push(k_RInfo);
1851 __ call(RuntimeAddress(Runtime1::entry_for(Runtime1::slow_subtype_check_id)));
1852 __ pop(klass_RInfo);
1853 __ pop(k_RInfo);
1854 // result is a boolean
1855 __ cmpl(k_RInfo, 0);
1856 __ jcc(Assembler::equal, *failure_target);
1857 // fall through to the success case
1858
1859 if (op->should_profile()) {
1860 Register mdo = klass_RInfo, recv = k_RInfo;
1861 __ bind(profile_cast_success);
1862 __ movoop(mdo, md->constant_encoding());
1863 __ load_klass(recv, value);
1864 Label update_done;
1865 type_profile_helper(mdo, md, data, recv, &done);
1866 __ jmpb(done);
1867
1868 __ bind(profile_cast_failure);
1869 __ movoop(mdo, md->constant_encoding());
1870 Address counter_addr(mdo, md->byte_offset_of_slot(data, CounterData::count_offset()));
1871 __ subptr(counter_addr, DataLayout::counter_increment);
1872 __ jmp(*stub->entry());
1873 }
1874
1875 __ bind(done);
1876 } else
1877 if (code == lir_checkcast) {
1878 Register obj = op->object()->as_register();
1879 Register dst = op->result_opr()->as_register();
1880 Label success;
1881 emit_typecheck_helper(op, &success, op->stub()->entry(), &success);
1882 __ bind(success);
1883 if (dst != obj) {
1884 __ mov(dst, obj);
1885 }
1886 } else
1887 if (code == lir_instanceof) {
1888 Register obj = op->object()->as_register();
1889 Register dst = op->result_opr()->as_register();
1890 Label success, failure, done;
1891 emit_typecheck_helper(op, &success, &failure, &failure);
1892 __ bind(failure);
1893 __ xorptr(dst, dst);
1894 __ jmpb(done);
1895 __ bind(success);
1896 __ movptr(dst, 1);
1897 __ bind(done);
1898 } else {
1899 ShouldNotReachHere();
1900 }
1901
1902 }
1903
1904
1905 void LIR_Assembler::emit_compare_and_swap(LIR_OpCompareAndSwap* op) {
1906 if (LP64_ONLY(false &&) op->code() == lir_cas_long && VM_Version::supports_cx8()) {
1907 assert(op->cmp_value()->as_register_lo() == rax, "wrong register");
1908 assert(op->cmp_value()->as_register_hi() == rdx, "wrong register");
1909 assert(op->new_value()->as_register_lo() == rbx, "wrong register");
1910 assert(op->new_value()->as_register_hi() == rcx, "wrong register");
1911 Register addr = op->addr()->as_register();
1912 if (os::is_MP()) {
1913 __ lock();
1914 }
1915 NOT_LP64(__ cmpxchg8(Address(addr, 0)));
1916
1917 } else if (op->code() == lir_cas_int || op->code() == lir_cas_obj ) {
1918 NOT_LP64(assert(op->addr()->is_single_cpu(), "must be single");)
1919 Register addr = (op->addr()->is_single_cpu() ? op->addr()->as_register() : op->addr()->as_register_lo());
1920 Register newval = op->new_value()->as_register();
1921 Register cmpval = op->cmp_value()->as_register();
1922 assert(cmpval == rax, "wrong register");
1923 assert(newval != NULL, "new val must be register");
1924 assert(cmpval != newval, "cmp and new values must be in different registers");
1925 assert(cmpval != addr, "cmp and addr must be in different registers");
1926 assert(newval != addr, "new value and addr must be in different registers");
1927
1928 if ( op->code() == lir_cas_obj) {
1929 #ifdef _LP64
1930 if (UseCompressedOops) {
1931 __ encode_heap_oop(cmpval);
1932 __ mov(rscratch1, newval);
1933 __ encode_heap_oop(rscratch1);
1934 if (os::is_MP()) {
1935 __ lock();
1936 }
1937 // cmpval (rax) is implicitly used by this instruction
1938 __ cmpxchgl(rscratch1, Address(addr, 0));
1939 } else
1940 #endif
1941 {
1942 if (os::is_MP()) {
1943 __ lock();
1944 }
1945 __ cmpxchgptr(newval, Address(addr, 0));
1946 }
1947 } else {
1948 assert(op->code() == lir_cas_int, "lir_cas_int expected");
1949 if (os::is_MP()) {
1950 __ lock();
1951 }
1952 __ cmpxchgl(newval, Address(addr, 0));
1953 }
1954 #ifdef _LP64
1955 } else if (op->code() == lir_cas_long) {
1956 Register addr = (op->addr()->is_single_cpu() ? op->addr()->as_register() : op->addr()->as_register_lo());
1957 Register newval = op->new_value()->as_register_lo();
1958 Register cmpval = op->cmp_value()->as_register_lo();
1959 assert(cmpval == rax, "wrong register");
1960 assert(newval != NULL, "new val must be register");
1961 assert(cmpval != newval, "cmp and new values must be in different registers");
1962 assert(cmpval != addr, "cmp and addr must be in different registers");
1963 assert(newval != addr, "new value and addr must be in different registers");
1964 if (os::is_MP()) {
1965 __ lock();
1966 }
1967 __ cmpxchgq(newval, Address(addr, 0));
1968 #endif // _LP64
1969 } else {
1970 Unimplemented();
1971 }
1972 }
1973
1974 void LIR_Assembler::cmove(LIR_Condition condition, LIR_Opr opr1, LIR_Opr opr2, LIR_Opr result, BasicType type) {
1975 Assembler::Condition acond, ncond;
1976 switch (condition) {
1977 case lir_cond_equal: acond = Assembler::equal; ncond = Assembler::notEqual; break;
1978 case lir_cond_notEqual: acond = Assembler::notEqual; ncond = Assembler::equal; break;
1979 case lir_cond_less: acond = Assembler::less; ncond = Assembler::greaterEqual; break;
1980 case lir_cond_lessEqual: acond = Assembler::lessEqual; ncond = Assembler::greater; break;
1981 case lir_cond_greaterEqual: acond = Assembler::greaterEqual; ncond = Assembler::less; break;
1982 case lir_cond_greater: acond = Assembler::greater; ncond = Assembler::lessEqual; break;
1983 case lir_cond_belowEqual: acond = Assembler::belowEqual; ncond = Assembler::above; break;
1984 case lir_cond_aboveEqual: acond = Assembler::aboveEqual; ncond = Assembler::below; break;
1985 default: ShouldNotReachHere();
1986 }
1987
1988 if (opr1->is_cpu_register()) {
1989 reg2reg(opr1, result);
1990 } else if (opr1->is_stack()) {
1991 stack2reg(opr1, result, result->type());
1992 } else if (opr1->is_constant()) {
1993 const2reg(opr1, result, lir_patch_none, NULL);
1994 } else {
1995 ShouldNotReachHere();
1996 }
1997
1998 if (VM_Version::supports_cmov() && !opr2->is_constant()) {
1999 // optimized version that does not require a branch
2000 if (opr2->is_single_cpu()) {
2001 assert(opr2->cpu_regnr() != result->cpu_regnr(), "opr2 already overwritten by previous move");
2002 __ cmov(ncond, result->as_register(), opr2->as_register());
2003 } else if (opr2->is_double_cpu()) {
2004 assert(opr2->cpu_regnrLo() != result->cpu_regnrLo() && opr2->cpu_regnrLo() != result->cpu_regnrHi(), "opr2 already overwritten by previous move");
2005 assert(opr2->cpu_regnrHi() != result->cpu_regnrLo() && opr2->cpu_regnrHi() != result->cpu_regnrHi(), "opr2 already overwritten by previous move");
2006 __ cmovptr(ncond, result->as_register_lo(), opr2->as_register_lo());
2007 NOT_LP64(__ cmovptr(ncond, result->as_register_hi(), opr2->as_register_hi());)
2008 } else if (opr2->is_single_stack()) {
2009 __ cmovl(ncond, result->as_register(), frame_map()->address_for_slot(opr2->single_stack_ix()));
2010 } else if (opr2->is_double_stack()) {
2011 __ cmovptr(ncond, result->as_register_lo(), frame_map()->address_for_slot(opr2->double_stack_ix(), lo_word_offset_in_bytes));
2012 NOT_LP64(__ cmovptr(ncond, result->as_register_hi(), frame_map()->address_for_slot(opr2->double_stack_ix(), hi_word_offset_in_bytes));)
2013 } else {
2014 ShouldNotReachHere();
2015 }
2016
2017 } else {
2018 Label skip;
2019 __ jcc (acond, skip);
2020 if (opr2->is_cpu_register()) {
2021 reg2reg(opr2, result);
2022 } else if (opr2->is_stack()) {
2023 stack2reg(opr2, result, result->type());
2024 } else if (opr2->is_constant()) {
2025 const2reg(opr2, result, lir_patch_none, NULL);
2026 } else {
2027 ShouldNotReachHere();
2028 }
2029 __ bind(skip);
2030 }
2031 }
2032
2033
2034 void LIR_Assembler::arith_op(LIR_Code code, LIR_Opr left, LIR_Opr right, LIR_Opr dest, CodeEmitInfo* info, bool pop_fpu_stack) {
2035 assert(info == NULL, "should never be used, idiv/irem and ldiv/lrem not handled by this method");
2036
2037 if (left->is_single_cpu()) {
2038 assert(left == dest, "left and dest must be equal");
2039 Register lreg = left->as_register();
2040
2041 if (right->is_single_cpu()) {
2042 // cpu register - cpu register
2043 Register rreg = right->as_register();
2044 switch (code) {
2045 case lir_add: __ addl (lreg, rreg); break;
2046 case lir_sub: __ subl (lreg, rreg); break;
2047 case lir_mul: __ imull(lreg, rreg); break;
2048 default: ShouldNotReachHere();
2049 }
2050
2051 } else if (right->is_stack()) {
2052 // cpu register - stack
2053 Address raddr = frame_map()->address_for_slot(right->single_stack_ix());
2054 switch (code) {
2055 case lir_add: __ addl(lreg, raddr); break;
2056 case lir_sub: __ subl(lreg, raddr); break;
2057 default: ShouldNotReachHere();
2058 }
2059
2060 } else if (right->is_constant()) {
2061 // cpu register - constant
2062 jint c = right->as_constant_ptr()->as_jint();
2063 switch (code) {
2064 case lir_add: {
2065 __ incrementl(lreg, c);
2066 break;
2067 }
2068 case lir_sub: {
2069 __ decrementl(lreg, c);
2070 break;
2071 }
2072 default: ShouldNotReachHere();
2073 }
2074
2075 } else {
2076 ShouldNotReachHere();
2077 }
2078
2079 } else if (left->is_double_cpu()) {
2080 assert(left == dest, "left and dest must be equal");
2081 Register lreg_lo = left->as_register_lo();
2082 Register lreg_hi = left->as_register_hi();
2083
2084 if (right->is_double_cpu()) {
2085 // cpu register - cpu register
2086 Register rreg_lo = right->as_register_lo();
2087 Register rreg_hi = right->as_register_hi();
2088 NOT_LP64(assert_different_registers(lreg_lo, lreg_hi, rreg_lo, rreg_hi));
2089 LP64_ONLY(assert_different_registers(lreg_lo, rreg_lo));
2090 switch (code) {
2091 case lir_add:
2092 __ addptr(lreg_lo, rreg_lo);
2093 NOT_LP64(__ adcl(lreg_hi, rreg_hi));
2094 break;
2095 case lir_sub:
2096 __ subptr(lreg_lo, rreg_lo);
2097 NOT_LP64(__ sbbl(lreg_hi, rreg_hi));
2098 break;
2099 case lir_mul:
2100 #ifdef _LP64
2101 __ imulq(lreg_lo, rreg_lo);
2102 #else
2103 assert(lreg_lo == rax && lreg_hi == rdx, "must be");
2104 __ imull(lreg_hi, rreg_lo);
2105 __ imull(rreg_hi, lreg_lo);
2106 __ addl (rreg_hi, lreg_hi);
2107 __ mull (rreg_lo);
2108 __ addl (lreg_hi, rreg_hi);
2109 #endif // _LP64
2110 break;
2111 default:
2112 ShouldNotReachHere();
2113 }
2114
2115 } else if (right->is_constant()) {
2116 // cpu register - constant
2117 #ifdef _LP64
2118 jlong c = right->as_constant_ptr()->as_jlong_bits();
2119 __ movptr(r10, (intptr_t) c);
2120 switch (code) {
2121 case lir_add:
2122 __ addptr(lreg_lo, r10);
2123 break;
2124 case lir_sub:
2125 __ subptr(lreg_lo, r10);
2126 break;
2127 default:
2128 ShouldNotReachHere();
2129 }
2130 #else
2131 jint c_lo = right->as_constant_ptr()->as_jint_lo();
2132 jint c_hi = right->as_constant_ptr()->as_jint_hi();
2133 switch (code) {
2134 case lir_add:
2135 __ addptr(lreg_lo, c_lo);
2136 __ adcl(lreg_hi, c_hi);
2137 break;
2138 case lir_sub:
2139 __ subptr(lreg_lo, c_lo);
2140 __ sbbl(lreg_hi, c_hi);
2141 break;
2142 default:
2143 ShouldNotReachHere();
2144 }
2145 #endif // _LP64
2146
2147 } else {
2148 ShouldNotReachHere();
2149 }
2150
2151 } else if (left->is_single_xmm()) {
2152 assert(left == dest, "left and dest must be equal");
2153 XMMRegister lreg = left->as_xmm_float_reg();
2154
2155 if (right->is_single_xmm()) {
2156 XMMRegister rreg = right->as_xmm_float_reg();
2157 switch (code) {
2158 case lir_add: __ addss(lreg, rreg); break;
2159 case lir_sub: __ subss(lreg, rreg); break;
2160 case lir_mul_strictfp: // fall through
2161 case lir_mul: __ mulss(lreg, rreg); break;
2162 case lir_div_strictfp: // fall through
2163 case lir_div: __ divss(lreg, rreg); break;
2164 default: ShouldNotReachHere();
2165 }
2166 } else {
2167 Address raddr;
2168 if (right->is_single_stack()) {
2169 raddr = frame_map()->address_for_slot(right->single_stack_ix());
2170 } else if (right->is_constant()) {
2171 // hack for now
2172 raddr = __ as_Address(InternalAddress(float_constant(right->as_jfloat())));
2173 } else {
2174 ShouldNotReachHere();
2175 }
2176 switch (code) {
2177 case lir_add: __ addss(lreg, raddr); break;
2178 case lir_sub: __ subss(lreg, raddr); break;
2179 case lir_mul_strictfp: // fall through
2180 case lir_mul: __ mulss(lreg, raddr); break;
2181 case lir_div_strictfp: // fall through
2182 case lir_div: __ divss(lreg, raddr); break;
2183 default: ShouldNotReachHere();
2184 }
2185 }
2186
2187 } else if (left->is_double_xmm()) {
2188 assert(left == dest, "left and dest must be equal");
2189
2190 XMMRegister lreg = left->as_xmm_double_reg();
2191 if (right->is_double_xmm()) {
2192 XMMRegister rreg = right->as_xmm_double_reg();
2193 switch (code) {
2194 case lir_add: __ addsd(lreg, rreg); break;
2195 case lir_sub: __ subsd(lreg, rreg); break;
2196 case lir_mul_strictfp: // fall through
2197 case lir_mul: __ mulsd(lreg, rreg); break;
2198 case lir_div_strictfp: // fall through
2199 case lir_div: __ divsd(lreg, rreg); break;
2200 default: ShouldNotReachHere();
2201 }
2202 } else {
2203 Address raddr;
2204 if (right->is_double_stack()) {
2205 raddr = frame_map()->address_for_slot(right->double_stack_ix());
2206 } else if (right->is_constant()) {
2207 // hack for now
2208 raddr = __ as_Address(InternalAddress(double_constant(right->as_jdouble())));
2209 } else {
2210 ShouldNotReachHere();
2211 }
2212 switch (code) {
2213 case lir_add: __ addsd(lreg, raddr); break;
2214 case lir_sub: __ subsd(lreg, raddr); break;
2215 case lir_mul_strictfp: // fall through
2216 case lir_mul: __ mulsd(lreg, raddr); break;
2217 case lir_div_strictfp: // fall through
2218 case lir_div: __ divsd(lreg, raddr); break;
2219 default: ShouldNotReachHere();
2220 }
2221 }
2222
2223 } else if (left->is_single_fpu()) {
2224 assert(dest->is_single_fpu(), "fpu stack allocation required");
2225
2226 if (right->is_single_fpu()) {
2227 arith_fpu_implementation(code, left->fpu_regnr(), right->fpu_regnr(), dest->fpu_regnr(), pop_fpu_stack);
2228
2229 } else {
2230 assert(left->fpu_regnr() == 0, "left must be on TOS");
2231 assert(dest->fpu_regnr() == 0, "dest must be on TOS");
2232
2233 Address raddr;
2234 if (right->is_single_stack()) {
2235 raddr = frame_map()->address_for_slot(right->single_stack_ix());
2236 } else if (right->is_constant()) {
2237 address const_addr = float_constant(right->as_jfloat());
2238 assert(const_addr != NULL, "incorrect float/double constant maintainance");
2239 // hack for now
2240 raddr = __ as_Address(InternalAddress(const_addr));
2241 } else {
2242 ShouldNotReachHere();
2243 }
2244
2245 switch (code) {
2246 case lir_add: __ fadd_s(raddr); break;
2247 case lir_sub: __ fsub_s(raddr); break;
2248 case lir_mul_strictfp: // fall through
2249 case lir_mul: __ fmul_s(raddr); break;
2250 case lir_div_strictfp: // fall through
2251 case lir_div: __ fdiv_s(raddr); break;
2252 default: ShouldNotReachHere();
2253 }
2254 }
2255
2256 } else if (left->is_double_fpu()) {
2257 assert(dest->is_double_fpu(), "fpu stack allocation required");
2258
2259 if (code == lir_mul_strictfp || code == lir_div_strictfp) {
2260 // Double values require special handling for strictfp mul/div on x86
2261 __ fld_x(ExternalAddress(StubRoutines::addr_fpu_subnormal_bias1()));
2262 __ fmulp(left->fpu_regnrLo() + 1);
2263 }
2264
2265 if (right->is_double_fpu()) {
2266 arith_fpu_implementation(code, left->fpu_regnrLo(), right->fpu_regnrLo(), dest->fpu_regnrLo(), pop_fpu_stack);
2267
2268 } else {
2269 assert(left->fpu_regnrLo() == 0, "left must be on TOS");
2270 assert(dest->fpu_regnrLo() == 0, "dest must be on TOS");
2271
2272 Address raddr;
2273 if (right->is_double_stack()) {
2274 raddr = frame_map()->address_for_slot(right->double_stack_ix());
2275 } else if (right->is_constant()) {
2276 // hack for now
2277 raddr = __ as_Address(InternalAddress(double_constant(right->as_jdouble())));
2278 } else {
2279 ShouldNotReachHere();
2280 }
2281
2282 switch (code) {
2283 case lir_add: __ fadd_d(raddr); break;
2284 case lir_sub: __ fsub_d(raddr); break;
2285 case lir_mul_strictfp: // fall through
2286 case lir_mul: __ fmul_d(raddr); break;
2287 case lir_div_strictfp: // fall through
2288 case lir_div: __ fdiv_d(raddr); break;
2289 default: ShouldNotReachHere();
2290 }
2291 }
2292
2293 if (code == lir_mul_strictfp || code == lir_div_strictfp) {
2294 // Double values require special handling for strictfp mul/div on x86
2295 __ fld_x(ExternalAddress(StubRoutines::addr_fpu_subnormal_bias2()));
2296 __ fmulp(dest->fpu_regnrLo() + 1);
2297 }
2298
2299 } else if (left->is_single_stack() || left->is_address()) {
2300 assert(left == dest, "left and dest must be equal");
2301
2302 Address laddr;
2303 if (left->is_single_stack()) {
2304 laddr = frame_map()->address_for_slot(left->single_stack_ix());
2305 } else if (left->is_address()) {
2306 laddr = as_Address(left->as_address_ptr());
2307 } else {
2308 ShouldNotReachHere();
2309 }
2310
2311 if (right->is_single_cpu()) {
2312 Register rreg = right->as_register();
2313 switch (code) {
2314 case lir_add: __ addl(laddr, rreg); break;
2315 case lir_sub: __ subl(laddr, rreg); break;
2316 default: ShouldNotReachHere();
2317 }
2318 } else if (right->is_constant()) {
2319 jint c = right->as_constant_ptr()->as_jint();
2320 switch (code) {
2321 case lir_add: {
2322 __ incrementl(laddr, c);
2323 break;
2324 }
2325 case lir_sub: {
2326 __ decrementl(laddr, c);
2327 break;
2328 }
2329 default: ShouldNotReachHere();
2330 }
2331 } else {
2332 ShouldNotReachHere();
2333 }
2334
2335 } else {
2336 ShouldNotReachHere();
2337 }
2338 }
2339
2340 void LIR_Assembler::arith_fpu_implementation(LIR_Code code, int left_index, int right_index, int dest_index, bool pop_fpu_stack) {
2341 assert(pop_fpu_stack || (left_index == dest_index || right_index == dest_index), "invalid LIR");
2342 assert(!pop_fpu_stack || (left_index - 1 == dest_index || right_index - 1 == dest_index), "invalid LIR");
2343 assert(left_index == 0 || right_index == 0, "either must be on top of stack");
2344
2345 bool left_is_tos = (left_index == 0);
2346 bool dest_is_tos = (dest_index == 0);
2347 int non_tos_index = (left_is_tos ? right_index : left_index);
2348
2349 switch (code) {
2350 case lir_add:
2351 if (pop_fpu_stack) __ faddp(non_tos_index);
2352 else if (dest_is_tos) __ fadd (non_tos_index);
2353 else __ fadda(non_tos_index);
2354 break;
2355
2356 case lir_sub:
2357 if (left_is_tos) {
2358 if (pop_fpu_stack) __ fsubrp(non_tos_index);
2359 else if (dest_is_tos) __ fsub (non_tos_index);
2360 else __ fsubra(non_tos_index);
2361 } else {
2362 if (pop_fpu_stack) __ fsubp (non_tos_index);
2363 else if (dest_is_tos) __ fsubr (non_tos_index);
2364 else __ fsuba (non_tos_index);
2365 }
2366 break;
2367
2368 case lir_mul_strictfp: // fall through
2369 case lir_mul:
2370 if (pop_fpu_stack) __ fmulp(non_tos_index);
2371 else if (dest_is_tos) __ fmul (non_tos_index);
2372 else __ fmula(non_tos_index);
2373 break;
2374
2375 case lir_div_strictfp: // fall through
2376 case lir_div:
2377 if (left_is_tos) {
2378 if (pop_fpu_stack) __ fdivrp(non_tos_index);
2379 else if (dest_is_tos) __ fdiv (non_tos_index);
2380 else __ fdivra(non_tos_index);
2381 } else {
2382 if (pop_fpu_stack) __ fdivp (non_tos_index);
2383 else if (dest_is_tos) __ fdivr (non_tos_index);
2384 else __ fdiva (non_tos_index);
2385 }
2386 break;
2387
2388 case lir_rem:
2389 assert(left_is_tos && dest_is_tos && right_index == 1, "must be guaranteed by FPU stack allocation");
2390 __ fremr(noreg);
2391 break;
2392
2393 default:
2394 ShouldNotReachHere();
2395 }
2396 }
2397
2398
2399 void LIR_Assembler::intrinsic_op(LIR_Code code, LIR_Opr value, LIR_Opr unused, LIR_Opr dest, LIR_Op* op) {
2400 if (value->is_double_xmm()) {
2401 switch(code) {
2402 case lir_abs :
2403 {
2404 if (dest->as_xmm_double_reg() != value->as_xmm_double_reg()) {
2405 __ movdbl(dest->as_xmm_double_reg(), value->as_xmm_double_reg());
2406 }
2407 __ andpd(dest->as_xmm_double_reg(),
2408 ExternalAddress((address)double_signmask_pool));
2409 }
2410 break;
2411
2412 case lir_sqrt: __ sqrtsd(dest->as_xmm_double_reg(), value->as_xmm_double_reg()); break;
2413 // all other intrinsics are not available in the SSE instruction set, so FPU is used
2414 default : ShouldNotReachHere();
2415 }
2416
2417 } else if (value->is_double_fpu()) {
2418 assert(value->fpu_regnrLo() == 0 && dest->fpu_regnrLo() == 0, "both must be on TOS");
2419 switch(code) {
2420 case lir_log : __ flog() ; break;
2421 case lir_log10 : __ flog10() ; break;
2422 case lir_abs : __ fabs() ; break;
2423 case lir_sqrt : __ fsqrt(); break;
2424 case lir_sin :
2425 // Should consider not saving rbx, if not necessary
2426 __ trigfunc('s', op->as_Op2()->fpu_stack_size());
2427 break;
2428 case lir_cos :
2429 // Should consider not saving rbx, if not necessary
2430 assert(op->as_Op2()->fpu_stack_size() <= 6, "sin and cos need two free stack slots");
2431 __ trigfunc('c', op->as_Op2()->fpu_stack_size());
2432 break;
2433 case lir_tan :
2434 // Should consider not saving rbx, if not necessary
2435 __ trigfunc('t', op->as_Op2()->fpu_stack_size());
2436 break;
2437 default : ShouldNotReachHere();
2438 }
2439 } else {
2440 Unimplemented();
2441 }
2442 }
2443
2444 void LIR_Assembler::logic_op(LIR_Code code, LIR_Opr left, LIR_Opr right, LIR_Opr dst) {
2445 // assert(left->destroys_register(), "check");
2446 if (left->is_single_cpu()) {
2447 Register reg = left->as_register();
2448 if (right->is_constant()) {
2449 int val = right->as_constant_ptr()->as_jint();
2450 switch (code) {
2451 case lir_logic_and: __ andl (reg, val); break;
2452 case lir_logic_or: __ orl (reg, val); break;
2453 case lir_logic_xor: __ xorl (reg, val); break;
2454 default: ShouldNotReachHere();
2455 }
2456 } else if (right->is_stack()) {
2457 // added support for stack operands
2458 Address raddr = frame_map()->address_for_slot(right->single_stack_ix());
2459 switch (code) {
2460 case lir_logic_and: __ andl (reg, raddr); break;
2461 case lir_logic_or: __ orl (reg, raddr); break;
2462 case lir_logic_xor: __ xorl (reg, raddr); break;
2463 default: ShouldNotReachHere();
2464 }
2465 } else {
2466 Register rright = right->as_register();
2467 switch (code) {
2468 case lir_logic_and: __ andptr (reg, rright); break;
2469 case lir_logic_or : __ orptr (reg, rright); break;
2470 case lir_logic_xor: __ xorptr (reg, rright); break;
2471 default: ShouldNotReachHere();
2472 }
2473 }
2474 move_regs(reg, dst->as_register());
2475 } else {
2476 Register l_lo = left->as_register_lo();
2477 Register l_hi = left->as_register_hi();
2478 if (right->is_constant()) {
2479 #ifdef _LP64
2480 __ mov64(rscratch1, right->as_constant_ptr()->as_jlong());
2481 switch (code) {
2482 case lir_logic_and:
2483 __ andq(l_lo, rscratch1);
2484 break;
2485 case lir_logic_or:
2486 __ orq(l_lo, rscratch1);
2487 break;
2488 case lir_logic_xor:
2489 __ xorq(l_lo, rscratch1);
2490 break;
2491 default: ShouldNotReachHere();
2492 }
2493 #else
2494 int r_lo = right->as_constant_ptr()->as_jint_lo();
2495 int r_hi = right->as_constant_ptr()->as_jint_hi();
2496 switch (code) {
2497 case lir_logic_and:
2498 __ andl(l_lo, r_lo);
2499 __ andl(l_hi, r_hi);
2500 break;
2501 case lir_logic_or:
2502 __ orl(l_lo, r_lo);
2503 __ orl(l_hi, r_hi);
2504 break;
2505 case lir_logic_xor:
2506 __ xorl(l_lo, r_lo);
2507 __ xorl(l_hi, r_hi);
2508 break;
2509 default: ShouldNotReachHere();
2510 }
2511 #endif // _LP64
2512 } else {
2513 #ifdef _LP64
2514 Register r_lo;
2515 if (right->type() == T_OBJECT || right->type() == T_ARRAY) {
2516 r_lo = right->as_register();
2517 } else {
2518 r_lo = right->as_register_lo();
2519 }
2520 #else
2521 Register r_lo = right->as_register_lo();
2522 Register r_hi = right->as_register_hi();
2523 assert(l_lo != r_hi, "overwriting registers");
2524 #endif
2525 switch (code) {
2526 case lir_logic_and:
2527 __ andptr(l_lo, r_lo);
2528 NOT_LP64(__ andptr(l_hi, r_hi);)
2529 break;
2530 case lir_logic_or:
2531 __ orptr(l_lo, r_lo);
2532 NOT_LP64(__ orptr(l_hi, r_hi);)
2533 break;
2534 case lir_logic_xor:
2535 __ xorptr(l_lo, r_lo);
2536 NOT_LP64(__ xorptr(l_hi, r_hi);)
2537 break;
2538 default: ShouldNotReachHere();
2539 }
2540 }
2541
2542 Register dst_lo = dst->as_register_lo();
2543 Register dst_hi = dst->as_register_hi();
2544
2545 #ifdef _LP64
2546 move_regs(l_lo, dst_lo);
2547 #else
2548 if (dst_lo == l_hi) {
2549 assert(dst_hi != l_lo, "overwriting registers");
2550 move_regs(l_hi, dst_hi);
2551 move_regs(l_lo, dst_lo);
2552 } else {
2553 assert(dst_lo != l_hi, "overwriting registers");
2554 move_regs(l_lo, dst_lo);
2555 move_regs(l_hi, dst_hi);
2556 }
2557 #endif // _LP64
2558 }
2559 }
2560
2561
2562 // we assume that rax, and rdx can be overwritten
2563 void LIR_Assembler::arithmetic_idiv(LIR_Code code, LIR_Opr left, LIR_Opr right, LIR_Opr temp, LIR_Opr result, CodeEmitInfo* info) {
2564
2565 assert(left->is_single_cpu(), "left must be register");
2566 assert(right->is_single_cpu() || right->is_constant(), "right must be register or constant");
2567 assert(result->is_single_cpu(), "result must be register");
2568
2569 // assert(left->destroys_register(), "check");
2570 // assert(right->destroys_register(), "check");
2571
2572 Register lreg = left->as_register();
2573 Register dreg = result->as_register();
2574
2575 if (right->is_constant()) {
2576 int divisor = right->as_constant_ptr()->as_jint();
2577 assert(divisor > 0 && is_power_of_2(divisor), "must be");
2578 if (code == lir_idiv) {
2579 assert(lreg == rax, "must be rax,");
2580 assert(temp->as_register() == rdx, "tmp register must be rdx");
2581 __ cdql(); // sign extend into rdx:rax
2582 if (divisor == 2) {
2583 __ subl(lreg, rdx);
2584 } else {
2585 __ andl(rdx, divisor - 1);
2586 __ addl(lreg, rdx);
2587 }
2588 __ sarl(lreg, log2_intptr(divisor));
2589 move_regs(lreg, dreg);
2590 } else if (code == lir_irem) {
2591 Label done;
2592 __ mov(dreg, lreg);
2593 __ andl(dreg, 0x80000000 | (divisor - 1));
2594 __ jcc(Assembler::positive, done);
2595 __ decrement(dreg);
2596 __ orl(dreg, ~(divisor - 1));
2597 __ increment(dreg);
2598 __ bind(done);
2599 } else {
2600 ShouldNotReachHere();
2601 }
2602 } else {
2603 Register rreg = right->as_register();
2604 assert(lreg == rax, "left register must be rax,");
2605 assert(rreg != rdx, "right register must not be rdx");
2606 assert(temp->as_register() == rdx, "tmp register must be rdx");
2607
2608 move_regs(lreg, rax);
2609
2610 int idivl_offset = __ corrected_idivl(rreg);
2611 add_debug_info_for_div0(idivl_offset, info);
2612 if (code == lir_irem) {
2613 move_regs(rdx, dreg); // result is in rdx
2614 } else {
2615 move_regs(rax, dreg);
2616 }
2617 }
2618 }
2619
2620
2621 void LIR_Assembler::comp_op(LIR_Condition condition, LIR_Opr opr1, LIR_Opr opr2, LIR_Op2* op) {
2622 if (opr1->is_single_cpu()) {
2623 Register reg1 = opr1->as_register();
2624 if (opr2->is_single_cpu()) {
2625 // cpu register - cpu register
2626 if (opr1->type() == T_OBJECT || opr1->type() == T_ARRAY) {
2627 __ cmpptr(reg1, opr2->as_register());
2628 } else {
2629 assert(opr2->type() != T_OBJECT && opr2->type() != T_ARRAY, "cmp int, oop?");
2630 __ cmpl(reg1, opr2->as_register());
2631 }
2632 } else if (opr2->is_stack()) {
2633 // cpu register - stack
2634 if (opr1->type() == T_OBJECT || opr1->type() == T_ARRAY) {
2635 __ cmpptr(reg1, frame_map()->address_for_slot(opr2->single_stack_ix()));
2636 } else {
2637 __ cmpl(reg1, frame_map()->address_for_slot(opr2->single_stack_ix()));
2638 }
2639 } else if (opr2->is_constant()) {
2640 // cpu register - constant
2641 LIR_Const* c = opr2->as_constant_ptr();
2642 if (c->type() == T_INT) {
2643 __ cmpl(reg1, c->as_jint());
2644 } else if (c->type() == T_OBJECT || c->type() == T_ARRAY) {
2645 // In 64bit oops are single register
2646 jobject o = c->as_jobject();
2647 if (o == NULL) {
2648 __ cmpptr(reg1, (int32_t)NULL_WORD);
2649 } else {
2650 #ifdef _LP64
2651 __ movoop(rscratch1, o);
2652 __ cmpptr(reg1, rscratch1);
2653 #else
2654 __ cmpoop(reg1, c->as_jobject());
2655 #endif // _LP64
2656 }
2657 } else {
2658 ShouldNotReachHere();
2659 }
2660 // cpu register - address
2661 } else if (opr2->is_address()) {
2662 if (op->info() != NULL) {
2663 add_debug_info_for_null_check_here(op->info());
2664 }
2665 __ cmpl(reg1, as_Address(opr2->as_address_ptr()));
2666 } else {
2667 ShouldNotReachHere();
2668 }
2669
2670 } else if(opr1->is_double_cpu()) {
2671 Register xlo = opr1->as_register_lo();
2672 Register xhi = opr1->as_register_hi();
2673 if (opr2->is_double_cpu()) {
2674 #ifdef _LP64
2675 __ cmpptr(xlo, opr2->as_register_lo());
2676 #else
2677 // cpu register - cpu register
2678 Register ylo = opr2->as_register_lo();
2679 Register yhi = opr2->as_register_hi();
2680 __ subl(xlo, ylo);
2681 __ sbbl(xhi, yhi);
2682 if (condition == lir_cond_equal || condition == lir_cond_notEqual) {
2683 __ orl(xhi, xlo);
2684 }
2685 #endif // _LP64
2686 } else if (opr2->is_constant()) {
2687 // cpu register - constant 0
2688 assert(opr2->as_jlong() == (jlong)0, "only handles zero");
2689 #ifdef _LP64
2690 __ cmpptr(xlo, (int32_t)opr2->as_jlong());
2691 #else
2692 assert(condition == lir_cond_equal || condition == lir_cond_notEqual, "only handles equals case");
2693 __ orl(xhi, xlo);
2694 #endif // _LP64
2695 } else {
2696 ShouldNotReachHere();
2697 }
2698
2699 } else if (opr1->is_single_xmm()) {
2700 XMMRegister reg1 = opr1->as_xmm_float_reg();
2701 if (opr2->is_single_xmm()) {
2702 // xmm register - xmm register
2703 __ ucomiss(reg1, opr2->as_xmm_float_reg());
2704 } else if (opr2->is_stack()) {
2705 // xmm register - stack
2706 __ ucomiss(reg1, frame_map()->address_for_slot(opr2->single_stack_ix()));
2707 } else if (opr2->is_constant()) {
2708 // xmm register - constant
2709 __ ucomiss(reg1, InternalAddress(float_constant(opr2->as_jfloat())));
2710 } else if (opr2->is_address()) {
2711 // xmm register - address
2712 if (op->info() != NULL) {
2713 add_debug_info_for_null_check_here(op->info());
2714 }
2715 __ ucomiss(reg1, as_Address(opr2->as_address_ptr()));
2716 } else {
2717 ShouldNotReachHere();
2718 }
2719
2720 } else if (opr1->is_double_xmm()) {
2721 XMMRegister reg1 = opr1->as_xmm_double_reg();
2722 if (opr2->is_double_xmm()) {
2723 // xmm register - xmm register
2724 __ ucomisd(reg1, opr2->as_xmm_double_reg());
2725 } else if (opr2->is_stack()) {
2726 // xmm register - stack
2727 __ ucomisd(reg1, frame_map()->address_for_slot(opr2->double_stack_ix()));
2728 } else if (opr2->is_constant()) {
2729 // xmm register - constant
2730 __ ucomisd(reg1, InternalAddress(double_constant(opr2->as_jdouble())));
2731 } else if (opr2->is_address()) {
2732 // xmm register - address
2733 if (op->info() != NULL) {
2734 add_debug_info_for_null_check_here(op->info());
2735 }
2736 __ ucomisd(reg1, as_Address(opr2->pointer()->as_address()));
2737 } else {
2738 ShouldNotReachHere();
2739 }
2740
2741 } else if(opr1->is_single_fpu() || opr1->is_double_fpu()) {
2742 assert(opr1->is_fpu_register() && opr1->fpu() == 0, "currently left-hand side must be on TOS (relax this restriction)");
2743 assert(opr2->is_fpu_register(), "both must be registers");
2744 __ fcmp(noreg, opr2->fpu(), op->fpu_pop_count() > 0, op->fpu_pop_count() > 1);
2745
2746 } else if (opr1->is_address() && opr2->is_constant()) {
2747 LIR_Const* c = opr2->as_constant_ptr();
2748 #ifdef _LP64
2749 if (c->type() == T_OBJECT || c->type() == T_ARRAY) {
2750 assert(condition == lir_cond_equal || condition == lir_cond_notEqual, "need to reverse");
2751 __ movoop(rscratch1, c->as_jobject());
2752 }
2753 #endif // LP64
2754 if (op->info() != NULL) {
2755 add_debug_info_for_null_check_here(op->info());
2756 }
2757 // special case: address - constant
2758 LIR_Address* addr = opr1->as_address_ptr();
2759 if (c->type() == T_INT) {
2760 __ cmpl(as_Address(addr), c->as_jint());
2761 } else if (c->type() == T_OBJECT || c->type() == T_ARRAY) {
2762 #ifdef _LP64
2763 // %%% Make this explode if addr isn't reachable until we figure out a
2764 // better strategy by giving noreg as the temp for as_Address
2765 __ cmpptr(rscratch1, as_Address(addr, noreg));
2766 #else
2767 __ cmpoop(as_Address(addr), c->as_jobject());
2768 #endif // _LP64
2769 } else {
2770 ShouldNotReachHere();
2771 }
2772
2773 } else {
2774 ShouldNotReachHere();
2775 }
2776 }
2777
2778 void LIR_Assembler::comp_fl2i(LIR_Code code, LIR_Opr left, LIR_Opr right, LIR_Opr dst, LIR_Op2* op) {
2779 if (code == lir_cmp_fd2i || code == lir_ucmp_fd2i) {
2780 if (left->is_single_xmm()) {
2781 assert(right->is_single_xmm(), "must match");
2782 __ cmpss2int(left->as_xmm_float_reg(), right->as_xmm_float_reg(), dst->as_register(), code == lir_ucmp_fd2i);
2783 } else if (left->is_double_xmm()) {
2784 assert(right->is_double_xmm(), "must match");
2785 __ cmpsd2int(left->as_xmm_double_reg(), right->as_xmm_double_reg(), dst->as_register(), code == lir_ucmp_fd2i);
2786
2787 } else {
2788 assert(left->is_single_fpu() || left->is_double_fpu(), "must be");
2789 assert(right->is_single_fpu() || right->is_double_fpu(), "must match");
2790
2791 assert(left->fpu() == 0, "left must be on TOS");
2792 __ fcmp2int(dst->as_register(), code == lir_ucmp_fd2i, right->fpu(),
2793 op->fpu_pop_count() > 0, op->fpu_pop_count() > 1);
2794 }
2795 } else {
2796 assert(code == lir_cmp_l2i, "check");
2797 #ifdef _LP64
2798 Label done;
2799 Register dest = dst->as_register();
2800 __ cmpptr(left->as_register_lo(), right->as_register_lo());
2801 __ movl(dest, -1);
2802 __ jccb(Assembler::less, done);
2803 __ set_byte_if_not_zero(dest);
2804 __ movzbl(dest, dest);
2805 __ bind(done);
2806 #else
2807 __ lcmp2int(left->as_register_hi(),
2808 left->as_register_lo(),
2809 right->as_register_hi(),
2810 right->as_register_lo());
2811 move_regs(left->as_register_hi(), dst->as_register());
2812 #endif // _LP64
2813 }
2814 }
2815
2816
2817 void LIR_Assembler::align_call(LIR_Code code) {
2818 if (os::is_MP()) {
2819 // make sure that the displacement word of the call ends up word aligned
2820 int offset = __ offset();
2821 switch (code) {
2822 case lir_static_call:
2823 case lir_optvirtual_call:
2824 case lir_dynamic_call:
2825 offset += NativeCall::displacement_offset;
2826 break;
2827 case lir_icvirtual_call:
2828 offset += NativeCall::displacement_offset + NativeMovConstReg::instruction_size;
2829 break;
2830 case lir_virtual_call: // currently, sparc-specific for niagara
2831 default: ShouldNotReachHere();
2832 }
2833 while (offset++ % BytesPerWord != 0) {
2834 __ nop();
2835 }
2836 }
2837 }
2838
2839
2840 void LIR_Assembler::call(LIR_OpJavaCall* op, relocInfo::relocType rtype) {
2841 assert(!os::is_MP() || (__ offset() + NativeCall::displacement_offset) % BytesPerWord == 0,
2842 "must be aligned");
2843 __ call(AddressLiteral(op->addr(), rtype));
2844 add_call_info(code_offset(), op->info());
2845 }
2846
2847
2848 void LIR_Assembler::ic_call(LIR_OpJavaCall* op) {
2849 RelocationHolder rh = virtual_call_Relocation::spec(pc());
2850 __ movoop(IC_Klass, (jobject)Universe::non_oop_word());
2851 assert(!os::is_MP() ||
2852 (__ offset() + NativeCall::displacement_offset) % BytesPerWord == 0,
2853 "must be aligned");
2854 __ call(AddressLiteral(op->addr(), rh));
2855 add_call_info(code_offset(), op->info());
2856 }
2857
2858
2859 /* Currently, vtable-dispatch is only enabled for sparc platforms */
2860 void LIR_Assembler::vtable_call(LIR_OpJavaCall* op) {
2861 ShouldNotReachHere();
2862 }
2863
2864
2865 void LIR_Assembler::emit_static_call_stub() {
2866 address call_pc = __ pc();
2867 address stub = __ start_a_stub(call_stub_size);
2868 if (stub == NULL) {
2869 bailout("static call stub overflow");
2870 return;
2871 }
2872
2873 int start = __ offset();
2874 if (os::is_MP()) {
2875 // make sure that the displacement word of the call ends up word aligned
2876 int offset = __ offset() + NativeMovConstReg::instruction_size + NativeCall::displacement_offset;
2877 while (offset++ % BytesPerWord != 0) {
2878 __ nop();
2879 }
2880 }
2881 __ relocate(static_stub_Relocation::spec(call_pc));
2882 __ movoop(rbx, (jobject)NULL);
2883 // must be set to -1 at code generation time
2884 assert(!os::is_MP() || ((__ offset() + 1) % BytesPerWord) == 0, "must be aligned on MP");
2885 // On 64bit this will die since it will take a movq & jmp, must be only a jmp
2886 __ jump(RuntimeAddress(__ pc()));
2887
2888 assert(__ offset() - start <= call_stub_size, "stub too big");
2889 __ end_a_stub();
2890 }
2891
2892
2893 void LIR_Assembler::throw_op(LIR_Opr exceptionPC, LIR_Opr exceptionOop, CodeEmitInfo* info) {
2894 assert(exceptionOop->as_register() == rax, "must match");
2895 assert(exceptionPC->as_register() == rdx, "must match");
2896
2897 // exception object is not added to oop map by LinearScan
2898 // (LinearScan assumes that no oops are in fixed registers)
2899 info->add_register_oop(exceptionOop);
2900 Runtime1::StubID unwind_id;
2901
2902 // get current pc information
2903 // pc is only needed if the method has an exception handler, the unwind code does not need it.
2904 int pc_for_athrow_offset = __ offset();
2905 InternalAddress pc_for_athrow(__ pc());
2906 __ lea(exceptionPC->as_register(), pc_for_athrow);
2907 add_call_info(pc_for_athrow_offset, info); // for exception handler
2908
2909 __ verify_not_null_oop(rax);
2910 // search an exception handler (rax: exception oop, rdx: throwing pc)
2911 if (compilation()->has_fpu_code()) {
2912 unwind_id = Runtime1::handle_exception_id;
2913 } else {
2914 unwind_id = Runtime1::handle_exception_nofpu_id;
2915 }
2916 __ call(RuntimeAddress(Runtime1::entry_for(unwind_id)));
2917
2918 // enough room for two byte trap
2919 __ nop();
2920 }
2921
2922
2923 void LIR_Assembler::unwind_op(LIR_Opr exceptionOop) {
2924 assert(exceptionOop->as_register() == rax, "must match");
2925
2926 __ jmp(_unwind_handler_entry);
2927 }
2928
2929
2930 void LIR_Assembler::shift_op(LIR_Code code, LIR_Opr left, LIR_Opr count, LIR_Opr dest, LIR_Opr tmp) {
2931
2932 // optimized version for linear scan:
2933 // * count must be already in ECX (guaranteed by LinearScan)
2934 // * left and dest must be equal
2935 // * tmp must be unused
2936 assert(count->as_register() == SHIFT_count, "count must be in ECX");
2937 assert(left == dest, "left and dest must be equal");
2938 assert(tmp->is_illegal(), "wasting a register if tmp is allocated");
2939
2940 if (left->is_single_cpu()) {
2941 Register value = left->as_register();
2942 assert(value != SHIFT_count, "left cannot be ECX");
2943
2944 switch (code) {
2945 case lir_shl: __ shll(value); break;
2946 case lir_shr: __ sarl(value); break;
2947 case lir_ushr: __ shrl(value); break;
2948 default: ShouldNotReachHere();
2949 }
2950 } else if (left->is_double_cpu()) {
2951 Register lo = left->as_register_lo();
2952 Register hi = left->as_register_hi();
2953 assert(lo != SHIFT_count && hi != SHIFT_count, "left cannot be ECX");
2954 #ifdef _LP64
2955 switch (code) {
2956 case lir_shl: __ shlptr(lo); break;
2957 case lir_shr: __ sarptr(lo); break;
2958 case lir_ushr: __ shrptr(lo); break;
2959 default: ShouldNotReachHere();
2960 }
2961 #else
2962
2963 switch (code) {
2964 case lir_shl: __ lshl(hi, lo); break;
2965 case lir_shr: __ lshr(hi, lo, true); break;
2966 case lir_ushr: __ lshr(hi, lo, false); break;
2967 default: ShouldNotReachHere();
2968 }
2969 #endif // LP64
2970 } else {
2971 ShouldNotReachHere();
2972 }
2973 }
2974
2975
2976 void LIR_Assembler::shift_op(LIR_Code code, LIR_Opr left, jint count, LIR_Opr dest) {
2977 if (dest->is_single_cpu()) {
2978 // first move left into dest so that left is not destroyed by the shift
2979 Register value = dest->as_register();
2980 count = count & 0x1F; // Java spec
2981
2982 move_regs(left->as_register(), value);
2983 switch (code) {
2984 case lir_shl: __ shll(value, count); break;
2985 case lir_shr: __ sarl(value, count); break;
2986 case lir_ushr: __ shrl(value, count); break;
2987 default: ShouldNotReachHere();
2988 }
2989 } else if (dest->is_double_cpu()) {
2990 #ifndef _LP64
2991 Unimplemented();
2992 #else
2993 // first move left into dest so that left is not destroyed by the shift
2994 Register value = dest->as_register_lo();
2995 count = count & 0x1F; // Java spec
2996
2997 move_regs(left->as_register_lo(), value);
2998 switch (code) {
2999 case lir_shl: __ shlptr(value, count); break;
3000 case lir_shr: __ sarptr(value, count); break;
3001 case lir_ushr: __ shrptr(value, count); break;
3002 default: ShouldNotReachHere();
3003 }
3004 #endif // _LP64
3005 } else {
3006 ShouldNotReachHere();
3007 }
3008 }
3009
3010
3011 void LIR_Assembler::store_parameter(Register r, int offset_from_rsp_in_words) {
3012 assert(offset_from_rsp_in_words >= 0, "invalid offset from rsp");
3013 int offset_from_rsp_in_bytes = offset_from_rsp_in_words * BytesPerWord;
3014 assert(offset_from_rsp_in_bytes < frame_map()->reserved_argument_area_size(), "invalid offset");
3015 __ movptr (Address(rsp, offset_from_rsp_in_bytes), r);
3016 }
3017
3018
3019 void LIR_Assembler::store_parameter(jint c, int offset_from_rsp_in_words) {
3020 assert(offset_from_rsp_in_words >= 0, "invalid offset from rsp");
3021 int offset_from_rsp_in_bytes = offset_from_rsp_in_words * BytesPerWord;
3022 assert(offset_from_rsp_in_bytes < frame_map()->reserved_argument_area_size(), "invalid offset");
3023 __ movptr (Address(rsp, offset_from_rsp_in_bytes), c);
3024 }
3025
3026
3027 void LIR_Assembler::store_parameter(jobject o, int offset_from_rsp_in_words) {
3028 assert(offset_from_rsp_in_words >= 0, "invalid offset from rsp");
3029 int offset_from_rsp_in_bytes = offset_from_rsp_in_words * BytesPerWord;
3030 assert(offset_from_rsp_in_bytes < frame_map()->reserved_argument_area_size(), "invalid offset");
3031 __ movoop (Address(rsp, offset_from_rsp_in_bytes), o);
3032 }
3033
3034
3035 // This code replaces a call to arraycopy; no exception may
3036 // be thrown in this code, they must be thrown in the System.arraycopy
3037 // activation frame; we could save some checks if this would not be the case
3038 void LIR_Assembler::emit_arraycopy(LIR_OpArrayCopy* op) {
3039 ciArrayKlass* default_type = op->expected_type();
3040 Register src = op->src()->as_register();
3041 Register dst = op->dst()->as_register();
3042 Register src_pos = op->src_pos()->as_register();
3043 Register dst_pos = op->dst_pos()->as_register();
3044 Register length = op->length()->as_register();
3045 Register tmp = op->tmp()->as_register();
3046
3047 CodeStub* stub = op->stub();
3048 int flags = op->flags();
3049 BasicType basic_type = default_type != NULL ? default_type->element_type()->basic_type() : T_ILLEGAL;
3050 if (basic_type == T_ARRAY) basic_type = T_OBJECT;
3051
3052 // if we don't know anything, just go through the generic arraycopy
3053 if (default_type == NULL) {
3054 Label done;
3055 // save outgoing arguments on stack in case call to System.arraycopy is needed
3056 // HACK ALERT. This code used to push the parameters in a hardwired fashion
3057 // for interpreter calling conventions. Now we have to do it in new style conventions.
3058 // For the moment until C1 gets the new register allocator I just force all the
3059 // args to the right place (except the register args) and then on the back side
3060 // reload the register args properly if we go slow path. Yuck
3061
3062 // These are proper for the calling convention
3063 store_parameter(length, 2);
3064 store_parameter(dst_pos, 1);
3065 store_parameter(dst, 0);
3066
3067 // these are just temporary placements until we need to reload
3068 store_parameter(src_pos, 3);
3069 store_parameter(src, 4);
3070 NOT_LP64(assert(src == rcx && src_pos == rdx, "mismatch in calling convention");)
3071
3072 address C_entry = CAST_FROM_FN_PTR(address, Runtime1::arraycopy);
3073
3074 address copyfunc_addr = StubRoutines::generic_arraycopy();
3075
3076 // pass arguments: may push as this is not a safepoint; SP must be fix at each safepoint
3077 #ifdef _LP64
3078 // The arguments are in java calling convention so we can trivially shift them to C
3079 // convention
3080 assert_different_registers(c_rarg0, j_rarg1, j_rarg2, j_rarg3, j_rarg4);
3081 __ mov(c_rarg0, j_rarg0);
3082 assert_different_registers(c_rarg1, j_rarg2, j_rarg3, j_rarg4);
3083 __ mov(c_rarg1, j_rarg1);
3084 assert_different_registers(c_rarg2, j_rarg3, j_rarg4);
3085 __ mov(c_rarg2, j_rarg2);
3086 assert_different_registers(c_rarg3, j_rarg4);
3087 __ mov(c_rarg3, j_rarg3);
3088 #ifdef _WIN64
3089 // Allocate abi space for args but be sure to keep stack aligned
3090 __ subptr(rsp, 6*wordSize);
3091 store_parameter(j_rarg4, 4);
3092 if (copyfunc_addr == NULL) { // Use C version if stub was not generated
3093 __ call(RuntimeAddress(C_entry));
3094 } else {
3095 #ifndef PRODUCT
3096 if (PrintC1Statistics) {
3097 __ incrementl(ExternalAddress((address)&Runtime1::_generic_arraycopystub_cnt));
3098 }
3099 #endif
3100 __ call(RuntimeAddress(copyfunc_addr));
3101 }
3102 __ addptr(rsp, 6*wordSize);
3103 #else
3104 __ mov(c_rarg4, j_rarg4);
3105 if (copyfunc_addr == NULL) { // Use C version if stub was not generated
3106 __ call(RuntimeAddress(C_entry));
3107 } else {
3108 #ifndef PRODUCT
3109 if (PrintC1Statistics) {
3110 __ incrementl(ExternalAddress((address)&Runtime1::_generic_arraycopystub_cnt));
3111 }
3112 #endif
3113 __ call(RuntimeAddress(copyfunc_addr));
3114 }
3115 #endif // _WIN64
3116 #else
3117 __ push(length);
3118 __ push(dst_pos);
3119 __ push(dst);
3120 __ push(src_pos);
3121 __ push(src);
3122
3123 if (copyfunc_addr == NULL) { // Use C version if stub was not generated
3124 __ call_VM_leaf(C_entry, 5); // removes pushed parameter from the stack
3125 } else {
3126 #ifndef PRODUCT
3127 if (PrintC1Statistics) {
3128 __ incrementl(ExternalAddress((address)&Runtime1::_generic_arraycopystub_cnt));
3129 }
3130 #endif
3131 __ call_VM_leaf(copyfunc_addr, 5); // removes pushed parameter from the stack
3132 }
3133
3134 #endif // _LP64
3135
3136 __ cmpl(rax, 0);
3137 __ jcc(Assembler::equal, *stub->continuation());
3138
3139 if (copyfunc_addr != NULL) {
3140 __ mov(tmp, rax);
3141 __ xorl(tmp, -1);
3142 }
3143
3144 // Reload values from the stack so they are where the stub
3145 // expects them.
3146 __ movptr (dst, Address(rsp, 0*BytesPerWord));
3147 __ movptr (dst_pos, Address(rsp, 1*BytesPerWord));
3148 __ movptr (length, Address(rsp, 2*BytesPerWord));
3149 __ movptr (src_pos, Address(rsp, 3*BytesPerWord));
3150 __ movptr (src, Address(rsp, 4*BytesPerWord));
3151
3152 if (copyfunc_addr != NULL) {
3153 __ subl(length, tmp);
3154 __ addl(src_pos, tmp);
3155 __ addl(dst_pos, tmp);
3156 }
3157 __ jmp(*stub->entry());
3158
3159 __ bind(*stub->continuation());
3160 return;
3161 }
3162
3163 assert(default_type != NULL && default_type->is_array_klass() && default_type->is_loaded(), "must be true at this point");
3164
3165 int elem_size = type2aelembytes(basic_type);
3166 int shift_amount;
3167 Address::ScaleFactor scale;
3168
3169 switch (elem_size) {
3170 case 1 :
3171 shift_amount = 0;
3172 scale = Address::times_1;
3173 break;
3174 case 2 :
3175 shift_amount = 1;
3176 scale = Address::times_2;
3177 break;
3178 case 4 :
3179 shift_amount = 2;
3180 scale = Address::times_4;
3181 break;
3182 case 8 :
3183 shift_amount = 3;
3184 scale = Address::times_8;
3185 break;
3186 default:
3187 ShouldNotReachHere();
3188 }
3189
3190 Address src_length_addr = Address(src, arrayOopDesc::length_offset_in_bytes());
3191 Address dst_length_addr = Address(dst, arrayOopDesc::length_offset_in_bytes());
3192 Address src_klass_addr = Address(src, oopDesc::klass_offset_in_bytes());
3193 Address dst_klass_addr = Address(dst, oopDesc::klass_offset_in_bytes());
3194
3195 // length and pos's are all sign extended at this point on 64bit
3196
3197 // test for NULL
3198 if (flags & LIR_OpArrayCopy::src_null_check) {
3199 __ testptr(src, src);
3200 __ jcc(Assembler::zero, *stub->entry());
3201 }
3202 if (flags & LIR_OpArrayCopy::dst_null_check) {
3203 __ testptr(dst, dst);
3204 __ jcc(Assembler::zero, *stub->entry());
3205 }
3206
3207 // check if negative
3208 if (flags & LIR_OpArrayCopy::src_pos_positive_check) {
3209 __ testl(src_pos, src_pos);
3210 __ jcc(Assembler::less, *stub->entry());
3211 }
3212 if (flags & LIR_OpArrayCopy::dst_pos_positive_check) {
3213 __ testl(dst_pos, dst_pos);
3214 __ jcc(Assembler::less, *stub->entry());
3215 }
3216
3217 if (flags & LIR_OpArrayCopy::src_range_check) {
3218 __ lea(tmp, Address(src_pos, length, Address::times_1, 0));
3219 __ cmpl(tmp, src_length_addr);
3220 __ jcc(Assembler::above, *stub->entry());
3221 }
3222 if (flags & LIR_OpArrayCopy::dst_range_check) {
3223 __ lea(tmp, Address(dst_pos, length, Address::times_1, 0));
3224 __ cmpl(tmp, dst_length_addr);
3225 __ jcc(Assembler::above, *stub->entry());
3226 }
3227
3228 if (flags & LIR_OpArrayCopy::length_positive_check) {
3229 __ testl(length, length);
3230 __ jcc(Assembler::less, *stub->entry());
3231 __ jcc(Assembler::zero, *stub->continuation());
3232 }
3233
3234 #ifdef _LP64
3235 __ movl2ptr(src_pos, src_pos); //higher 32bits must be null
3236 __ movl2ptr(dst_pos, dst_pos); //higher 32bits must be null
3237 #endif
3238
3239 if (flags & LIR_OpArrayCopy::type_check) {
3240 // We don't know the array types are compatible
3241 if (basic_type != T_OBJECT) {
3242 // Simple test for basic type arrays
3243 if (UseCompressedOops) {
3244 __ movl(tmp, src_klass_addr);
3245 __ cmpl(tmp, dst_klass_addr);
3246 } else {
3247 __ movptr(tmp, src_klass_addr);
3248 __ cmpptr(tmp, dst_klass_addr);
3249 }
3250 __ jcc(Assembler::notEqual, *stub->entry());
3251 } else {
3252 // For object arrays, if src is a sub class of dst then we can
3253 // safely do the copy.
3254 Label cont, slow;
3255
3256 __ push(src);
3257 __ push(dst);
3258
3259 __ load_klass(src, src);
3260 __ load_klass(dst, dst);
3261
3262 __ check_klass_subtype_fast_path(src, dst, tmp, &cont, &slow, NULL);
3263
3264 __ push(src);
3265 __ push(dst);
3266 __ call(RuntimeAddress(Runtime1::entry_for(Runtime1::slow_subtype_check_id)));
3267 __ pop(dst);
3268 __ pop(src);
3269
3270 __ cmpl(src, 0);
3271 __ jcc(Assembler::notEqual, cont);
3272
3273 __ bind(slow);
3274 __ pop(dst);
3275 __ pop(src);
3276
3277 address copyfunc_addr = StubRoutines::checkcast_arraycopy();
3278 if (copyfunc_addr != NULL) { // use stub if available
3279 // src is not a sub class of dst so we have to do a
3280 // per-element check.
3281
3282 int mask = LIR_OpArrayCopy::src_objarray|LIR_OpArrayCopy::dst_objarray;
3283 if ((flags & mask) != mask) {
3284 // Check that at least both of them object arrays.
3285 assert(flags & mask, "one of the two should be known to be an object array");
3286
3287 if (!(flags & LIR_OpArrayCopy::src_objarray)) {
3288 __ load_klass(tmp, src);
3289 } else if (!(flags & LIR_OpArrayCopy::dst_objarray)) {
3290 __ load_klass(tmp, dst);
3291 }
3292 int lh_offset = klassOopDesc::header_size() * HeapWordSize +
3293 Klass::layout_helper_offset_in_bytes();
3294 Address klass_lh_addr(tmp, lh_offset);
3295 jint objArray_lh = Klass::array_layout_helper(T_OBJECT);
3296 __ cmpl(klass_lh_addr, objArray_lh);
3297 __ jcc(Assembler::notEqual, *stub->entry());
3298 }
3299
3300 // Spill because stubs can use any register they like and it's
3301 // easier to restore just those that we care about.
3302 store_parameter(dst, 0);
3303 store_parameter(dst_pos, 1);
3304 store_parameter(length, 2);
3305 store_parameter(src_pos, 3);
3306 store_parameter(src, 4);
3307
3308 #ifndef _LP64
3309 __ movptr(tmp, dst_klass_addr);
3310 __ movptr(tmp, Address(tmp, objArrayKlass::element_klass_offset_in_bytes() + sizeof(oopDesc)));
3311 __ push(tmp);
3312 __ movl(tmp, Address(tmp, Klass::super_check_offset_offset_in_bytes() + sizeof(oopDesc)));
3313 __ push(tmp);
3314 __ push(length);
3315 __ lea(tmp, Address(dst, dst_pos, scale, arrayOopDesc::base_offset_in_bytes(basic_type)));
3316 __ push(tmp);
3317 __ lea(tmp, Address(src, src_pos, scale, arrayOopDesc::base_offset_in_bytes(basic_type)));
3318 __ push(tmp);
3319
3320 __ call_VM_leaf(copyfunc_addr, 5);
3321 #else
3322 __ movl2ptr(length, length); //higher 32bits must be null
3323
3324 __ lea(c_rarg0, Address(src, src_pos, scale, arrayOopDesc::base_offset_in_bytes(basic_type)));
3325 assert_different_registers(c_rarg0, dst, dst_pos, length);
3326 __ lea(c_rarg1, Address(dst, dst_pos, scale, arrayOopDesc::base_offset_in_bytes(basic_type)));
3327 assert_different_registers(c_rarg1, dst, length);
3328
3329 __ mov(c_rarg2, length);
3330 assert_different_registers(c_rarg2, dst);
3331
3332 #ifdef _WIN64
3333 // Allocate abi space for args but be sure to keep stack aligned
3334 __ subptr(rsp, 6*wordSize);
3335 __ load_klass(c_rarg3, dst);
3336 __ movptr(c_rarg3, Address(c_rarg3, objArrayKlass::element_klass_offset_in_bytes() + sizeof(oopDesc)));
3337 store_parameter(c_rarg3, 4);
3338 __ movl(c_rarg3, Address(c_rarg3, Klass::super_check_offset_offset_in_bytes() + sizeof(oopDesc)));
3339 __ call(RuntimeAddress(copyfunc_addr));
3340 __ addptr(rsp, 6*wordSize);
3341 #else
3342 __ load_klass(c_rarg4, dst);
3343 __ movptr(c_rarg4, Address(c_rarg4, objArrayKlass::element_klass_offset_in_bytes() + sizeof(oopDesc)));
3344 __ movl(c_rarg3, Address(c_rarg4, Klass::super_check_offset_offset_in_bytes() + sizeof(oopDesc)));
3345 __ call(RuntimeAddress(copyfunc_addr));
3346 #endif
3347
3348 #endif
3349
3350 #ifndef PRODUCT
3351 if (PrintC1Statistics) {
3352 Label failed;
3353 __ testl(rax, rax);
3354 __ jcc(Assembler::notZero, failed);
3355 __ incrementl(ExternalAddress((address)&Runtime1::_arraycopy_checkcast_cnt));
3356 __ bind(failed);
3357 }
3358 #endif
3359
3360 __ testl(rax, rax);
3361 __ jcc(Assembler::zero, *stub->continuation());
3362
3363 #ifndef PRODUCT
3364 if (PrintC1Statistics) {
3365 __ incrementl(ExternalAddress((address)&Runtime1::_arraycopy_checkcast_attempt_cnt));
3366 }
3367 #endif
3368
3369 __ mov(tmp, rax);
3370
3371 __ xorl(tmp, -1);
3372
3373 // Restore previously spilled arguments
3374 __ movptr (dst, Address(rsp, 0*BytesPerWord));
3375 __ movptr (dst_pos, Address(rsp, 1*BytesPerWord));
3376 __ movptr (length, Address(rsp, 2*BytesPerWord));
3377 __ movptr (src_pos, Address(rsp, 3*BytesPerWord));
3378 __ movptr (src, Address(rsp, 4*BytesPerWord));
3379
3380
3381 __ subl(length, tmp);
3382 __ addl(src_pos, tmp);
3383 __ addl(dst_pos, tmp);
3384 }
3385
3386 __ jmp(*stub->entry());
3387
3388 __ bind(cont);
3389 __ pop(dst);
3390 __ pop(src);
3391 }
3392 }
3393
3394 #ifdef ASSERT
3395 if (basic_type != T_OBJECT || !(flags & LIR_OpArrayCopy::type_check)) {
3396 // Sanity check the known type with the incoming class. For the
3397 // primitive case the types must match exactly with src.klass and
3398 // dst.klass each exactly matching the default type. For the
3399 // object array case, if no type check is needed then either the
3400 // dst type is exactly the expected type and the src type is a
3401 // subtype which we can't check or src is the same array as dst
3402 // but not necessarily exactly of type default_type.
3403 Label known_ok, halt;
3404 __ movoop(tmp, default_type->constant_encoding());
3405 #ifdef _LP64
3406 if (UseCompressedOops) {
3407 __ encode_heap_oop(tmp);
3408 }
3409 #endif
3410
3411 if (basic_type != T_OBJECT) {
3412
3413 if (UseCompressedOops) __ cmpl(tmp, dst_klass_addr);
3414 else __ cmpptr(tmp, dst_klass_addr);
3415 __ jcc(Assembler::notEqual, halt);
3416 if (UseCompressedOops) __ cmpl(tmp, src_klass_addr);
3417 else __ cmpptr(tmp, src_klass_addr);
3418 __ jcc(Assembler::equal, known_ok);
3419 } else {
3420 if (UseCompressedOops) __ cmpl(tmp, dst_klass_addr);
3421 else __ cmpptr(tmp, dst_klass_addr);
3422 __ jcc(Assembler::equal, known_ok);
3423 __ cmpptr(src, dst);
3424 __ jcc(Assembler::equal, known_ok);
3425 }
3426 __ bind(halt);
3427 __ stop("incorrect type information in arraycopy");
3428 __ bind(known_ok);
3429 }
3430 #endif
3431
3432 #ifndef PRODUCT
3433 if (PrintC1Statistics) {
3434 __ incrementl(ExternalAddress(Runtime1::arraycopy_count_address(basic_type)));
3435 }
3436 #endif
3437
3438 #ifdef _LP64
3439 assert_different_registers(c_rarg0, dst, dst_pos, length);
3440 __ lea(c_rarg0, Address(src, src_pos, scale, arrayOopDesc::base_offset_in_bytes(basic_type)));
3441 assert_different_registers(c_rarg1, length);
3442 __ lea(c_rarg1, Address(dst, dst_pos, scale, arrayOopDesc::base_offset_in_bytes(basic_type)));
3443 __ mov(c_rarg2, length);
3444
3445 #else
3446 __ lea(tmp, Address(src, src_pos, scale, arrayOopDesc::base_offset_in_bytes(basic_type)));
3447 store_parameter(tmp, 0);
3448 __ lea(tmp, Address(dst, dst_pos, scale, arrayOopDesc::base_offset_in_bytes(basic_type)));
3449 store_parameter(tmp, 1);
3450 store_parameter(length, 2);
3451 #endif // _LP64
3452
3453 bool disjoint = (flags & LIR_OpArrayCopy::overlapping) == 0;
3454 bool aligned = (flags & LIR_OpArrayCopy::unaligned) == 0;
3455 const char *name;
3456 address entry = StubRoutines::select_arraycopy_function(basic_type, aligned, disjoint, name, false);
3457 __ call_VM_leaf(entry, 0);
3458
3459 __ bind(*stub->continuation());
3460 }
3461
3462
3463 void LIR_Assembler::emit_lock(LIR_OpLock* op) {
3464 Register obj = op->obj_opr()->as_register(); // may not be an oop
3465 Register hdr = op->hdr_opr()->as_register();
3466 Register lock = op->lock_opr()->as_register();
3467 if (!UseFastLocking) {
3468 __ jmp(*op->stub()->entry());
3469 } else if (op->code() == lir_lock) {
3470 Register scratch = noreg;
3471 if (UseBiasedLocking) {
3472 scratch = op->scratch_opr()->as_register();
3473 }
3474 assert(BasicLock::displaced_header_offset_in_bytes() == 0, "lock_reg must point to the displaced header");
3475 // add debug info for NullPointerException only if one is possible
3476 int null_check_offset = __ lock_object(hdr, obj, lock, scratch, *op->stub()->entry());
3477 if (op->info() != NULL) {
3478 add_debug_info_for_null_check(null_check_offset, op->info());
3479 }
3480 // done
3481 } else if (op->code() == lir_unlock) {
3482 assert(BasicLock::displaced_header_offset_in_bytes() == 0, "lock_reg must point to the displaced header");
3483 __ unlock_object(hdr, obj, lock, *op->stub()->entry());
3484 } else {
3485 Unimplemented();
3486 }
3487 __ bind(*op->stub()->continuation());
3488 }
3489
3490
3491 void LIR_Assembler::emit_profile_call(LIR_OpProfileCall* op) {
3492 ciMethod* method = op->profiled_method();
3493 int bci = op->profiled_bci();
3494
3495 // Update counter for all call types
3496 ciMethodData* md = method->method_data_or_null();
3497 assert(md != NULL, "Sanity");
3498 ciProfileData* data = md->bci_to_data(bci);
3499 assert(data->is_CounterData(), "need CounterData for calls");
3500 assert(op->mdo()->is_single_cpu(), "mdo must be allocated");
3501 Register mdo = op->mdo()->as_register();
3502 __ movoop(mdo, md->constant_encoding());
3503 Address counter_addr(mdo, md->byte_offset_of_slot(data, CounterData::count_offset()));
3504 Bytecodes::Code bc = method->java_code_at_bci(bci);
3505 // Perform additional virtual call profiling for invokevirtual and
3506 // invokeinterface bytecodes
3507 if ((bc == Bytecodes::_invokevirtual || bc == Bytecodes::_invokeinterface) &&
3508 C1ProfileVirtualCalls) {
3509 assert(op->recv()->is_single_cpu(), "recv must be allocated");
3510 Register recv = op->recv()->as_register();
3511 assert_different_registers(mdo, recv);
3512 assert(data->is_VirtualCallData(), "need VirtualCallData for virtual calls");
3513 ciKlass* known_klass = op->known_holder();
3514 if (C1OptimizeVirtualCallProfiling && known_klass != NULL) {
3515 // We know the type that will be seen at this call site; we can
3516 // statically update the methodDataOop rather than needing to do
3517 // dynamic tests on the receiver type
3518
3519 // NOTE: we should probably put a lock around this search to
3520 // avoid collisions by concurrent compilations
3521 ciVirtualCallData* vc_data = (ciVirtualCallData*) data;
3522 uint i;
3523 for (i = 0; i < VirtualCallData::row_limit(); i++) {
3524 ciKlass* receiver = vc_data->receiver(i);
3525 if (known_klass->equals(receiver)) {
3526 Address data_addr(mdo, md->byte_offset_of_slot(data, VirtualCallData::receiver_count_offset(i)));
3527 __ addptr(data_addr, DataLayout::counter_increment);
3528 return;
3529 }
3530 }
3531
3532 // Receiver type not found in profile data; select an empty slot
3533
3534 // Note that this is less efficient than it should be because it
3535 // always does a write to the receiver part of the
3536 // VirtualCallData rather than just the first time
3537 for (i = 0; i < VirtualCallData::row_limit(); i++) {
3538 ciKlass* receiver = vc_data->receiver(i);
3539 if (receiver == NULL) {
3540 Address recv_addr(mdo, md->byte_offset_of_slot(data, VirtualCallData::receiver_offset(i)));
3541 __ movoop(recv_addr, known_klass->constant_encoding());
3542 Address data_addr(mdo, md->byte_offset_of_slot(data, VirtualCallData::receiver_count_offset(i)));
3543 __ addptr(data_addr, DataLayout::counter_increment);
3544 return;
3545 }
3546 }
3547 } else {
3548 __ load_klass(recv, recv);
3549 Label update_done;
3550 type_profile_helper(mdo, md, data, recv, &update_done);
3551 // Receiver did not match any saved receiver and there is no empty row for it.
3552 // Increment total counter to indicate polymorphic case.
3553 __ addptr(counter_addr, DataLayout::counter_increment);
3554
3555 __ bind(update_done);
3556 }
3557 } else {
3558 // Static call
3559 __ addptr(counter_addr, DataLayout::counter_increment);
3560 }
3561 }
3562
3563 void LIR_Assembler::emit_delay(LIR_OpDelay*) {
3564 Unimplemented();
3565 }
3566
3567
3568 void LIR_Assembler::monitor_address(int monitor_no, LIR_Opr dst) {
3569 __ lea(dst->as_register(), frame_map()->address_for_monitor_lock(monitor_no));
3570 }
3571
3572
3573 void LIR_Assembler::align_backward_branch_target() {
3574 __ align(BytesPerWord);
3575 }
3576
3577
3578 void LIR_Assembler::negate(LIR_Opr left, LIR_Opr dest) {
3579 if (left->is_single_cpu()) {
3580 __ negl(left->as_register());
3581 move_regs(left->as_register(), dest->as_register());
3582
3583 } else if (left->is_double_cpu()) {
3584 Register lo = left->as_register_lo();
3585 #ifdef _LP64
3586 Register dst = dest->as_register_lo();
3587 __ movptr(dst, lo);
3588 __ negptr(dst);
3589 #else
3590 Register hi = left->as_register_hi();
3591 __ lneg(hi, lo);
3592 if (dest->as_register_lo() == hi) {
3593 assert(dest->as_register_hi() != lo, "destroying register");
3594 move_regs(hi, dest->as_register_hi());
3595 move_regs(lo, dest->as_register_lo());
3596 } else {
3597 move_regs(lo, dest->as_register_lo());
3598 move_regs(hi, dest->as_register_hi());
3599 }
3600 #endif // _LP64
3601
3602 } else if (dest->is_single_xmm()) {
3603 if (left->as_xmm_float_reg() != dest->as_xmm_float_reg()) {
3604 __ movflt(dest->as_xmm_float_reg(), left->as_xmm_float_reg());
3605 }
3606 __ xorps(dest->as_xmm_float_reg(),
3607 ExternalAddress((address)float_signflip_pool));
3608
3609 } else if (dest->is_double_xmm()) {
3610 if (left->as_xmm_double_reg() != dest->as_xmm_double_reg()) {
3611 __ movdbl(dest->as_xmm_double_reg(), left->as_xmm_double_reg());
3612 }
3613 __ xorpd(dest->as_xmm_double_reg(),
3614 ExternalAddress((address)double_signflip_pool));
3615
3616 } else if (left->is_single_fpu() || left->is_double_fpu()) {
3617 assert(left->fpu() == 0, "arg must be on TOS");
3618 assert(dest->fpu() == 0, "dest must be TOS");
3619 __ fchs();
3620
3621 } else {
3622 ShouldNotReachHere();
3623 }
3624 }
3625
3626
3627 void LIR_Assembler::leal(LIR_Opr addr, LIR_Opr dest) {
3628 assert(addr->is_address() && dest->is_register(), "check");
3629 Register reg;
3630 reg = dest->as_pointer_register();
3631 __ lea(reg, as_Address(addr->as_address_ptr()));
3632 }
3633
3634
3635
3636 void LIR_Assembler::rt_call(LIR_Opr result, address dest, const LIR_OprList* args, LIR_Opr tmp, CodeEmitInfo* info) {
3637 assert(!tmp->is_valid(), "don't need temporary");
3638 __ call(RuntimeAddress(dest));
3639 if (info != NULL) {
3640 add_call_info_here(info);
3641 }
3642 }
3643
3644
3645 void LIR_Assembler::volatile_move_op(LIR_Opr src, LIR_Opr dest, BasicType type, CodeEmitInfo* info) {
3646 assert(type == T_LONG, "only for volatile long fields");
3647
3648 if (info != NULL) {
3649 add_debug_info_for_null_check_here(info);
3650 }
3651
3652 if (src->is_double_xmm()) {
3653 if (dest->is_double_cpu()) {
3654 #ifdef _LP64
3655 __ movdq(dest->as_register_lo(), src->as_xmm_double_reg());
3656 #else
3657 __ movdl(dest->as_register_lo(), src->as_xmm_double_reg());
3658 __ psrlq(src->as_xmm_double_reg(), 32);
3659 __ movdl(dest->as_register_hi(), src->as_xmm_double_reg());
3660 #endif // _LP64
3661 } else if (dest->is_double_stack()) {
3662 __ movdbl(frame_map()->address_for_slot(dest->double_stack_ix()), src->as_xmm_double_reg());
3663 } else if (dest->is_address()) {
3664 __ movdbl(as_Address(dest->as_address_ptr()), src->as_xmm_double_reg());
3665 } else {
3666 ShouldNotReachHere();
3667 }
3668
3669 } else if (dest->is_double_xmm()) {
3670 if (src->is_double_stack()) {
3671 __ movdbl(dest->as_xmm_double_reg(), frame_map()->address_for_slot(src->double_stack_ix()));
3672 } else if (src->is_address()) {
3673 __ movdbl(dest->as_xmm_double_reg(), as_Address(src->as_address_ptr()));
3674 } else {
3675 ShouldNotReachHere();
3676 }
3677
3678 } else if (src->is_double_fpu()) {
3679 assert(src->fpu_regnrLo() == 0, "must be TOS");
3680 if (dest->is_double_stack()) {
3681 __ fistp_d(frame_map()->address_for_slot(dest->double_stack_ix()));
3682 } else if (dest->is_address()) {
3683 __ fistp_d(as_Address(dest->as_address_ptr()));
3684 } else {
3685 ShouldNotReachHere();
3686 }
3687
3688 } else if (dest->is_double_fpu()) {
3689 assert(dest->fpu_regnrLo() == 0, "must be TOS");
3690 if (src->is_double_stack()) {
3691 __ fild_d(frame_map()->address_for_slot(src->double_stack_ix()));
3692 } else if (src->is_address()) {
3693 __ fild_d(as_Address(src->as_address_ptr()));
3694 } else {
3695 ShouldNotReachHere();
3696 }
3697 } else {
3698 ShouldNotReachHere();
3699 }
3700 }
3701
3702
3703 void LIR_Assembler::membar() {
3704 // QQQ sparc TSO uses this,
3705 __ membar( Assembler::Membar_mask_bits(Assembler::StoreLoad));
3706 }
3707
3708 void LIR_Assembler::membar_acquire() {
3709 // No x86 machines currently require load fences
3710 // __ load_fence();
3711 }
3712
3713 void LIR_Assembler::membar_release() {
3714 // No x86 machines currently require store fences
3715 // __ store_fence();
3716 }
3717
3718 void LIR_Assembler::get_thread(LIR_Opr result_reg) {
3719 assert(result_reg->is_register(), "check");
3720 #ifdef _LP64
3721 // __ get_thread(result_reg->as_register_lo());
3722 __ mov(result_reg->as_register(), r15_thread);
3723 #else
3724 __ get_thread(result_reg->as_register());
3725 #endif // _LP64
3726 }
3727
3728
3729 void LIR_Assembler::peephole(LIR_List*) {
3730 // do nothing for now
3731 }
3732
3733
3734 #undef __